|what did the messages say?|
|it is really important to have trust in a relationship. I was kind of going through the same thing as you. I found text messages from a girl in my boyfriends phone. I asked him about it and he gave me a good reason for them. I trusted him and 4 months later I found the same kind of thing so I decided to call her for myself - I found out he'd been cheating on me. I'm not telling you to go this far but trust your instincts. There's no point in being in the relationship if you can't be honest and open from the beginning. The longer you leave it the more you'll have to lose.
Hope this helps you