I would be honest, he may not take it well but the thing is, if he has other womans number in his wallet I would be a little concerned as well. I think you deserve an explanation but because you were nosie it could cause problems, sounds like trust issues its a two-sided coin.

The worst thing he can do is deny it right. Question him and do some serious thinking about it. Good luck

um yes...confront him about it definitely...he will probably deny everything and make up some excuse..just be on your guard and let him know it is unacceptable...i found a girls number in my bf's room a year or so ago and called it and surprise...it was a chick he worked with..she said they never hung out but he'd been asking her to...we had a very long not so fun talk about that and as far as i know we haven't had any problems since then...i made it crystal clear that if he were to a)hide something like this ever again or b) i found out he was hanging out with some other chick behind my back, we'd be DONE and the past 2 1/2 years would be a complete waste...things have been good ever since...but put your foot down hunny, that b.s. cant be tolerated! bc he will do whatever you let him get away with..i think alot of guys like to test the waters