We broke up in May and he wanted to stay friends and since then, we've managed quite well. Since we were friends before we started dating, it was actually really easy to go back to the friend situation.
I'm out of the country for the summer and so I haven't seen him since June, but he agreed to keep in contact. I've sent him an email about once every 2-3 weeks so far and he's replied to only one. That might've been a misunderstanding as he thought I was too busy with my job to bother with him or anyone else. But just the other day, we started chatting online and although it might've been because it was 2 am for him, but the conversation was really sexually charged. Loads of innuendo and he started talking about our past and was reminiscing. He says he's sorry to have treated me so horribly (in his point-of-view anyway, I don't actually agree w/that comment) and he's really sorry. Sometime by the end of the conversation, it got to the point of 'yeah, let's have sex when you get back' and etc. But since he's not the type to sleep or even in fact date anyone, I'm not sure he's just all about the sex.
To be quite honest, I'm not sure what to make of it. What's he thinking? I mean, does he regret having ended the relationship or was he just teasing and joking? I'm just confused.