How do you know when your boyfriend is cheating on you again? I caught him one time and he stated that it's my fault that he was sleeping with this woman and she was just a f--- and that's it, I love him but I am scared, because he might do it again.

He has his own apt and I am not allowed to answer his phone, now what's up with that?

What’s up is that he is lying to you. How could it be your fault that he slept with another woman? Now if he had apologized profusely and promised never to do it again and didn’t have rules about you not answering his phone, that would be another story. But given the way he is acting, I wouldn’t trust him to be faithful at all, and that means that not only might you get hurt emotionally, but if he catches some disease, he could pass it on to you. So since you asked for my advice, here it is: wash that man right out of your hair.