Is my fiancee cheating on me?

Umm... I'm sorry, what? Your boyfriend, let alone FIANCEE, should never ever tell you he'd be with another girl. Because being with another girl is not something he should be thinking about. I am not in your relationship, so I can't tell you if I think he could physically be cheating, but what he is doing to you is not right. He should not be taking his ex girlfriend out and telling you not to text him. You have made a commitment to one another and plan to be husband and wife one day. You have the right to text him when you please, see his phone when you please, you have the right to question his whereabouts, and you have the right to tell him that you do not feel comfortable with him going out with other girls. Because you shouldn't be comfortable with that. Because I am sure he would not be okay with you doing the same to him. He should not be telling you he likes other women either. I really think that you need to stand up for yourself and tell this man that the things he is doing is not respectful to you. As his future wife, you deserve more from him and you should expect more. This is the person you are going to be with for the rest of your life. Twenty years down the line is he going to be going to the movies with his ex then coming home and telling you "if i hadn't married you, i would have married her?" Stand up for yourself!!! You deserve that much! Don't let him do that to you.