WIBTA if I left my friends because I feel left out

I 17F have been in a friend group that is mostly guys(all of us are around the same age). I’ve been with this group since I was 13, and for those wondering how I ended up in this group, basically one of the guys in this group was my ex and wanted me to be friends with his friends, we no longer talk due to come complications with are friendship after the break up. After the breakup I expected to be out of the group because those guys were his friends, and thought I’d be left with no friends from that group but a miracle happened and they all sided with me(For reference the breakup was 2 years after I joined the group)but he is still in his group(and yes there is people that take his side aswell).

I still talk with most of them but after awhile things just became really dry in the group. At first I thought it was natural because groups tend to go dry for some time, but I was soon informed by one of my friends that there was a seperate all boy group chat that they communicate in and one of those guys was my ex.(This other group is about 1 year old)The moment I heard this my heart sank and my mind began to spiral. The thought of the people I talked with the most having another group where they were playing games and chatting non stop with with my ex threw me off.

Yes I understand that there is a gender barrier for all of them being guys and me being a girl might make them uncomfortable or weird for them to talk or open up, or ask me to do stuff(especially if all they know me as one of their friends ex) and yes it is selfish of me for wanting to be included but I strongly feel like i shouldn’t be excluded from some things because of this. Of course all of them deserve privacy and if they don’t feel like sharing something with me but with someone else private chat does exist and they could just communicate that way but I feel like that is selfish to say.I thought many times abt leaving them so I wouldn’t have to worry abt this anymore but when your friends with people for 4 years it just makes it extremely hard to let go and weird to explain, so WIBTAH?