My bf (17) and i (16f) have been together for 7 months, currently doing long distance. His ex split up with him a month before we got together which i didnt know about at the time.

A few months ago we had been texting and both of us clearly very bored and so he asked if id like to see screenshots of his friend, i said yea out of boredom (i really could not give a shit about his friend but we needed something to get a conversation going). The messages are from a girl , last year with a matching pfp which is a little weird but i dont mention it. He sends me pictures of her, her Instagram blah blah and then i realise its his ex?? He had been talking to me about his ex who he called his friend. I was sobbing. I didnt believe he was cheating, but hes re read his texts with his ex and looked at her pictures and sent them to me. He'd been weird about his ex before, asking me about mine and why we broke up etc but when i asked he said no. A few weeks later he told me about them breaking up and how she just blocked him on everything and didnt talk to him ,idrk. I told him how it upset me and he apologised.

However, recently he told me how his ex started talking to him again about getting back together and being sexual with him. Idk why he even accepted it or didnt mention me at all. She said he was there for him and then unadded then for some reason he added her back to call her weird, which is weird to me like leave it atp. Theres also another girl who he was friends with online , years ago who added him. He told me how she saw we were dating and suddenly stopped texting ,again idk why he just didnt tell her before. Imo, thats ' i like you but you have a gf so im not trying anymore' behaviour. I didnt mention that tho until he mentoined something she said (it was a bit of banter but whenever i banter with him he gets in a mood?) i asked why he was still talking to her since he said she pissed him off and liked him , he denied it and said she just didnt want to intrude. But why would she worry about that if it was platonic?And since he clearly said she wasnt as theyre still talking why didnt he ask me too? Its my relationship aswell. i dont think hes trying to hurt me , unless he IS cheating. Am i the asshole?