QUESTION

I'm 25 and have been seeing a man for almost 2 years and he is very much older then me.He has two kids never been married wealthy and has a great personality.I'm a quiet girl dated only one guy before and that was 7yrs.I met this man and my world changed.His great in bed and that's where we spend most of our time i have not spoken to him about the fact that we spend our time together just indoors.We get to see each other only two times a month because of schedule with the kids and the mothers, yes the mothers not the mom.I know from the start what i got myself into his a very sexual guy and i have not been with a man in this way.He does make me feel good but when i leave i can't help but think he will find someone to be with because i am not there.I have found msgs on his phone that indicated to me that he is/was sleeping with someone during our time together.The msgs was very detailed of what had happen that night.I could not confront him because i felt i had know right.I was torn up and felt sick.I ask him in a sms if he is sleeping around he just said no.I ended up going on with the "relationship".I want to leave and don't know how.He is changing things he would normally like he use to not want to hold hands or hug me or put his arms around me at night because of the whole thing of not wanting to get to emotional involved and i understood that.But now he his doing all that and we've been together almost 2yrs and he didn't do those things.Is he just playing with my head because he knows that's the things that makes us closer and more intimate???? I don't have the courage to ask him what's going on?? I could walk away from this if he told me it's just sex, yes i will miss him dearly.But he has lived his life i am only starting mine.I can't have a relationship with any man now because i turn them down and lie that i don't have time for relationships now.I don't want to be scared and think that i wont find a man that will make me feel this way again.