What does it mean when your ex-boyfriend calls you every night?

How flattering!! There's a few reasons I can think of as to why he would do this--but you are the best judge of which one fits best. First, I would consider why he is your "ex": was he kind and generous when he was with you, was the breakup due to a dealbreaker (I.e.verbal or physical abuse), did he return to an ex-girlfriend, you broke up with him, etc. If you broke up on friendly terms, then he just wants to maintain the contact. I would not imagine anything further, or encourage him to return to you. If the parting was not friendly or in response to misbehavior, you need to block his calls and emails, since further contact is not going to do you any good and may, at most, endanger you. Also, it is not helpful to him since he is keeping busy trying to contact you instead of moving on! That he is very bored* He may need to get a job/hobby/girlfriend~ in that order