AITAH for dating my bestfriend's Ex situationship

As a basic rule of reddit im using a throwaway acct so this will probably be deleted in a while.

so I am a F(18) and i met my best friend who I'll call B in our first year of college. we became friends after she introduced herself to me because i was already friends with this guy from our class that she had a crush on and wanted me to help introduce them. we clicked and became good friends. over the course of our first year she moved on from crushes to crushes like speed dating or something, but i loved her so i never bat an eye ever. Fast forward to some months, she went over like 4 guys before finally landing to the situation-ship this is about.

Me and her were in this committee together which held an event for which she photographed. so there was a mutual connection to everyone we met in said event. this dude, ill call him Luke(M19), was the winner of said event. Luke and B followed each other on Instagram after talking on the pretext of the photos. me and Luke had no interactions whatsoever and I am pretty sure i didn't even notice him in said event.

Months after said event, this is something I am not exactly clear about that who texted first because both take each others name but basically they started texting to each other and it started becoming flirtier each day. Now that is how i get introduced to Luke. Luke was always just B's Man in my eyes so i barely talked to him directly.

That changed the day she made him meet us. After this we made a gc with each other cause B suggested to do so hence a gc was made on instagram. In this gc we all talked a lot. it was B and mines friend grp with luke and his bestfriend. The gc was active but it was mostly always me and luke who would end up talking and everyone would just pitch in from time to time. I noticed this now but B was always mostly absent from gc video calls and late night texts as she had a strict family.

This whole time me and luke had conversations abt books, movies, our mutual love for writing and music. We both enjoyed billie and we used to talk abt stuff like this. One day luke and B had a fight. B came to me ranting abt it and i asked her what i could do and i remember this fight had bits of it happening in this gc and i took B's side(ofc) After which i went to luke's dm to ask him why he was so angry at her. this fight got resolved and B was grateful for me for saying something. From that day we sent reels had conversations abt our pet dog (we both have the same breed) and the talks went for hours on end. It was always always just friendly talk and i would bring up B randomly up asw and always took her side and tried to explain why she does some things (she is very self absorbed at times and would disregard luke unintentionally)

months went by, Luke and B started having more and more issues. Luke's elder brother wanted luke to focus on his grades as he had an important examination coming up so he asked luke to end wtvr this was. (Luke's brother and him have a 11 year age gap and they have a strewed relationship) Luke was very stressed abt everything going on with his brother on his tail so he talked to B abt it and they decided to not be serious abt anything for now.

this was the starting point of the drama between them. one day B went to Luke's place of residence and asked Luke to meet her outside(this was all going down in the gc). Luke's brother was home and so he couldn't. B started blaming luke for not putting enough efforts for her and this pissed him off. after this they didn't talk for weeks and after B told me luke isn't replying to her and he is mad she asked me to say smth, so i did. this talk went for some hours as he told me abt everything. he even went deep into his lore abt his exes and stuff. I understood his perspective and talked to B because they woudlnt communicate with each other.

This is getting long and i am not even half done so ill speed up. B heard a rumor that Luke and his ex are going to date so instead of texting Luke she went to a mutual of Luke and hers to ask abt this rumour and abt this potential ex. this friend told the ex and the ex told the whole friendgrp as the ex and luke have a mutual friendgrp (this potential ex was just luke's crush of around three years before B, the ex emotionally played with him,used him for attention and luke after 3 years called her out for it. it never being a serious relationship and him not wanting to feel embarrased, he didnt tell his friends and they still teased the both together) and luke's whole friend grp fought with him for lying abt this for years.

B barely apologized when confronted by luke and luke was done. Yes i did try to help them communicate but it didnt work (im dumb im sorry) now weeks into this displeasure and B goes to meet her ex crush/situationship to 'sort things out cause he is miserable without her' and luke hearing this was offically done so he told B He will not take this further they can stay friends but do not expect a relationship. Now when this happened me and luke became great friends but ofc i loved my bestfriend, so i asked her in the upcoming weeks thrice if us still having contact makes her feel weird and if she wants me to stop, i absolutely will. she said she was fine with it.

Now 4? months had passed by, B found another situationship and started hating on luke calling him names and a playboy and stuff. luke and I Ironically fell for each other after all this. it took me two therapy sessions to finally build up enough courage to talk to her. I told her everything. She said she needed time and told me i deserved better than him.

I gave her time, but ofc nothing ever changed back to normal. B even dropped this new dude cause she wasnt mentally feeling well after months of building things up with him. Thru all this i tried my best to make things better for her. Never talking abt Luke with/arnd her, talking to her when she felt bad and basically everything i could as a friend.

Now, Months after when i thought things would get normal, a good friend of mine and hers sent me a voice recording where she was telling everything abt 'her' side of this whole ordeal. She called me a bitch for stealing her dude and that i am a fake friend. I felt hurt cause this talk behind my back wasn't something i thought she would ever ever do.

I talked to her abt it but she just kept replying as if she didnt do anything. This made me sad. btw she didnt just talk shit abt me but the whole friend grp so in a real mean girls typa way, they all convinced me enough is enough (there have been other fights not related to this that i didnt get into) and my friend grp blocked her, call it peer pressure or wtvr you guys want to but i did asw (i still feel iffy abt this i wish i did smth else instead)

The next 2 days she skipped clg and her dad (concerned) wanted to talk to this dude in our grp who still kept contact. She texted him to call her dad and tell her abt the grp but to not talk abt luke instead only talk abt how she talked shit.

Things changed after that day. She would constantly stare at us and if we came close she would find excuses to run away. I wanted to hear just a mere im sorry for what i said but i never got that.

Months have passed by and college is going to end next week. We will probably never see each other again but i miss her, everyday. I miss her sm. I feel guilty for loving luke but luke is actually reallly amazing to me. He has met my parents and ive met his and we are going to hit our one year anniversary soon and i couldn't be happier. Yet i always feel saddened.

i also recently found out in the past week she put up an edit of me and her with the caption 'thank u for the memories' and i talked to the mutual dude friend and he forced her to talk with me but it was awkward and led to nothing. I miss her a lot and i wish i could fix it. Is there a chance of fixing this or should i just let it go?

I want to know what you guys think, aita? Ik i went against the no 1 rule and that is exactly why to this day i still hold the guilt everyday.

Any advice? thoughts? lemme know.