<human>: Summarize the given text in a few sentences.

We've known each other for more than 3 years now. We've always had this "more than friends" thing and kissed a couple of times but it wasn't until this July that it became official. 

Before we actually started dating, there was a 3 month period when he was together with another boy, who also happens to be his classmate. Now, I'm very open minded and believe in LGBT rights and equality, so my problem wasn't seeing him with another guy, I would've reacted the same way if it had been a girl. 

I tried to make it seem like I was happy for them, but deep inside it broke my heart to know that this guy was by my crush's side all the time and that he got to kiss him whenever he wanted while I was so far away from him. 

However, my crush broke up with the guy because "he realised he didn't want to be with another man." We got together about 1 year after their break up and recently I've found out that they are still "friends". I just don't get how someone could be friends with their ex? I mean, they had feelings for each other at some point then broke up, how could they only be friends after that? 

My boyfriend's sex drive is up in the air, and since we're long distance, I fear he's still hooking up with this guy. I asked him about it but he got very angry, started shouting, said he didnt want to talk about it ever again and accused ME of cheating (which is totally not true). Now he doesnt pick up his phone. What should I do?
<bot>: Long distance boyfriend might be hooking up with his ex boyfriend. I asked him about it, he got mad, accused me of cheating and declines my phone call.