I broke up with my ex about 5 months ago (I ended it). Not long after, my ex started seeing this other girl, and as it was still quite soon after we split, I assumed it was a rebound. In the 5 months, I haven't contacted my ex once, but he still contacts me. Just casually to brake the ice. Then he asked me if I fancied a drink. But he's seeing the other one so why is he still contacting me and why doesn't he go for a drink with her instead?