my boyfriend of 4 years has cheated on me once before..
he just got a new job and suddenly he starts getting text messages from a girl. I noticed his phone was blinking and when i wanted to look at pictures on his phone he made an excuse. He always seems to lie.... like it make situations better or something. So I started to suspect things. When he went to bed I went on the internet and checked his call and text message usage... not surprised i noticed that he had been calling and texting a girl for about a month.( they even talked a couple times on christmas ) When confronted he said it was just a friend from work... no big deal. Of course... I started thinking the worst because it's happened to me before. I made a big deal.. and asked many questions.
He told me that he would stop talking to her.. he has stopped talking to her.. (checked the phone records) but she still texts him 3 times a day. HE never replies though.
I work late nights.. so i worry that possibly he calls her at his mothers house.

also... oncehe left early to work. about a hour and a half early.. he said he was going to go out to breakfast and then to work because he didn't want to be late. Later that night I saw a receipt that proved that he went to breakfast 5 minutes before work. So I asked him about it and he pushed the trust issue on me.. and said he just got gas and then went to work and waited.. then went to work.. and systems crashed so he took a break and went to breakfast.
seems like a pretty dumb story to me.

and also one more thing...
he came home late the other night. He said when systems crash he has to stay longer... hmm.
but i never know if he's off late... because as i said i work nights..

oh and fyi. the lady he's been talking to is married and has a child. he works with her daily so how can i stop something like this? I already talked to her and she just gave me attitude... sooo.. i dont really know what to do.
any suggestions?
am i just suspecting the worst?

should i let it go until something else hits me in the face?

i really love him.. and it would be soo hard for me to leave him.. how can i make this work?

All you can do is keep your eyes open. Keep your mouth shut, I know you said you already confronted him about it but from now on keep it shut. Dont say anything for awhile, if he is doing something behind your back he will get careless if he thinks he is getting away with it. Keep close tabs on him without him knowing you will find out what is going on. Keep your head up and stay positive, no matter what happens you will be fine.