I feel so so lost (will delete later) long!!

Okay so, ive been with my current girlfriend for 3yrs and 4mo.
You’ll understand the title better and my motive to delete this later while reading, so please if you can give some advice it would be nice!
I was out of my first wlw relationship at the time we met, hadn’t even had my first kiss lol (long distance), between the breakup and her i’ve talked with some girls but nothing beyond a 3 day talking stage. My girlfriend who is just 1yr older than me has had multiple relationship’s (about 6?) before me, but it never really bothered me. When we got together she was still in contact with her ex, which i thought id give her the benefit of the doubt since i still talked with my ex after i met her for a short amount of time. Well let’s say that she wasn’t over her ex at all, literally broke up with me for a week since she thought it would be the best. (i should mention that she used to “garden” and started doing that while in the relationship witg her ex due to being obligated). For the first one year and a half of our relationship i was the other woman, i wasnt the first girl on her mind, but i was a dumb ahh teenager istg. Then when i thought it all ended with that bum, she droppped a bomb on me. She told me she still liked her ex after i cried in her arms asking her if she still liked that girl and she said no. Whatever yk what i thought i should just push it aside. For a while we were good, our sex life kept dying and reviving randomly after that, we had pretty good sex up until then. I was mostly topping and since it was still new every time was enticing.
Now, in autumn last year she dropped another bomb. Basically at that time one of our friends got cheated on and i guess it awoke something in her and she confessed the fact that her and her ex we’re still together when we got together. She painted me as a homewrecker to her ex and i didn’t know why that girl hated my guts, well now i know. Not only did she lie about that entire timeline not only to me but to our whole circle, also this was already 2yr and a half into the relationship.
I told her i literally lost my trust in her and she promised blah blah blah a bunch of yap. Anyway so after that i kind of shut down sex for some time, and when i finally opened up to her again and started trusting her, the sex was dry, i mean im a little bit of a kinky person i like to spice things up but she’s more vanilla, there is nothing enticing, even the sex became monotone.
So fast forward to March this year i went to Renee alone (she was supposed to come with me but couldn’t due to a family emergency) and the whole 4 days (3 and a half) i was gone she thought i had gangbangs with 15 girls all at the same time, literally almost made me cry at the concert before it even started.
This fucked it up even more because i’ve never given her a reason to doubt me, she has passwords to everything and im as loyal as a dog. This situation ended up putting us in a bigger hole and i cant get myself to get over the ex thing now.
Every fight we have revolves around these topics and its draining.
She doesn’t plan dates, she doesnt get me flowers, ive only recived flowers like 5 times in 3 years, i pay for everything and i cook and clean up most of the time. She does do other small things that count, but she doesn’t show me love in my love language. I dont ask for much, i ask to be seen tbh. I love her so much, i feel like a dog at her doorstep, but i love her so much, even tho she did all of this, my heart aches for her and not even all the stars in the milkyway could count more than my love for her. I’m so lost

But i love this girl so so much, you guys couldn’t even imagine. She is in most days my literal sunshine. My family loves her, she’s even working for the family business, my sister adores her and even my lwk homophobic dad likes her. She is so deep rooted into my life and soul that its hard to think of anything past a 3 day break. She is my everything after all. I could talk about her for hours