Sorry, mobile formatting, TLDR at the end.

So I was with this girl for around 5 months, and it ended in October last year, before this we were best friends for around a year and she meant everything to me. In the end, she had her reasons for not wanting to continue the relationship, which I respected, these included things such as culture, school stress, and just wanting to be her own person.

We made the effort to try and remain friends the same way we were before the relationship, which to this day is still happening, which I’m grateful for. She got over the relationship very quickly however,probably around a week or two after we broke up we were texting about feelings and stuff and she mentioned she basically had 0 romantic feelings for me anymore and that I shouldn’t try and get my hopes up of ever getting back with her (this is because I did have and still do have strong feelings for her, she wasn’t saying it to be an ass). 

The problem is, shortly after the break up, she starts hanging around with this guy, who we will call A. She claims that A was a family friend from when she was younger, who didn’t speak to her much during our relationship out of respect. However, she calls him her best friend, but never mentioned him or anything to do with him once in the time we were friends or during the relationship, only after. 

During our relationship, it definitely seemed as if I would always be the one to initiate anything, intimacy, dates, all of it. She didn’t make to much of an effort to plan things or anything, and would often back out of things due to family stuff which I respected (she has had a rough upbringing so I respected these reasons). 

Since we broke up, she has been hanging with A a lot. Like nearly daily going out on drives, going out places to eat etc, none of which she really did with me. 

I asked her if they have feelings for each other since we agreed to be open with this sort of stuff shortly after breaking up and she insisted nothing was happening and that he was like a brother to her, but recently she’s admitted they now both have strong feelings for each other and she said she loves him and can’t see herself with anybody else. She’s barely talking to me anymore and is always talking to or is always with this guy, and is not making an effort with me whatsoever despite regarding me as one of her best friends.

So Reddit, AITA for being suspicious that there might have been something going on between my ex and A while we were together?  