Is my boyfriend cheating or talking to someone else?

[evol]

Firstly he has no right to demand your passwords or to look through your phone whenever he pleases. (Although there shouldn't be secrets between couples, everyone still has their right to privacy)

Secondly if he's defensive over his ex, he probably still has feelings for her (trust me, I've been the guy in this situation).. and he could also be trying to turn it around on you accusing you of cheating etc, in an effort to cover his own doings. But that's just speculation.

If he persists in demanding to see your phone or whatever, demand to see his or his Facebook! If he's not happy about it and threatens to leave, tell him go ahead. Tough love may be necessary, you don't deserve to be treated like that. If he does leave, he's obviously not worth your time anyway.

Good luck whatever you do