How to deal with past cheating that is creeping into my new relationship?

My husband and I have been married almost three years now and we do very well. We talk about everything and recently, he began speaking about this girl from his class. I didn't think anything of it then, but she called and he took the phone to the bathroom to talk. When i asked him about it, he said that he did it because the bathroom is a quiet place to talk. i met her at his graduation, and she acted very aloof with him. He tells me that they talk all the time, even about her personal affairs so............ Anyways, i have confronted him about it and he swears that there is nothing. I am inclined to believe him because he goes to work and comes straight home, the same with school. I can't see where he has the time to cheat. I have been analyzing the situation and I am thinking that maybe because I was cheated on in the past by every serious boyfriend I ever had, that the mistrust issues from then, are rearing their heads up now. I don't want to lose this one if he is true.How to deal with past cheating that is creeping into my new relationship?
If he hasn't given you a reason to not trust him, then you aren't being fair to him.





Have him bring her around more often with you, so all of you can hang out together and you can get to know her better - then you can see for sure what is going on. If he doesn't want you around her, there might be more to it.