Is he playing games?

Sit him down and ask directly if he still feels anything for his ex. At first he's likely to avoid the question but eventually he should give you a straight answer. It's probable that he doesn't love her any more but still feels attached to her through his daughter. If you get in a formal relationship with him his attachment to his old life will go, he's already making the first steps.
How can you expect him to move on from his old life if you keep pushing him back there. Don't be afraid of his daughter, you could be the loving mother that he wants you to be.

Ignore the mean comments from people. Losers come on the internet to take out their aggression. It sounds like this young man does not know what he wants and this can easily break a heart. I don't know how old you are, but I wish we older gals could teach the youner generation what we learned through our mistakes. Most men are playing games. The good ones are out their but you need to practice patience to avoid the heart ache in between. Look for how a man treats his mother and his friends. The quiet geeky ones are usually the winners you over look. Write notes to yourself about the friends you have and love, and the family relationships you have and try to nurture those as much as you can. And RELAX, even this will pass. Even the worst heartache in time just becomes a story you tell. If you are honest with him about your feelings, perhaps you'll get a better idea. Good luck Diva.

Understand that because you're a woman, your body releases hormones that can make you feel like you're in love. More so because you're a virgin, because this is the first time you've been close to someone in this way. Sort your head out and try to understand if and want him to be happy and if you care for him or if you just want him to yourself. If you just want him, then it's probably just infatuation.
Also you say that you feel he hides too many emotions, when you're also the one who is hiding the fact that you clearly have an emotional attachment (whether it's love or not) towards him. You should come clean and talk to him.

I don;t like whe the girls play games. I like the person be honest. You should tell him that you would like a relationship with him but don't want one and why. So you comunicate like adults do.

I can personally guarantee you on a stack of bibles or all you hold holy that he will NEVER leave his wife for you.

He gets the benefits, you get the fringe.

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In fifteen years when your looks are gone or going, you'll find it and wonder why you are still throwing your life away on this user.

This is real life, you know. You don't get a do-over.

I don't know if he is playing games, but from the sound of it you are. The way you tell it he has told you that he still has feelings for his Ex. So he told you the truth. He asked you if you wanted to be more than friends and have a real relationship, you said no when you ment yes. You are the one who broke off contact just to see what it would feel like! Grow The F**K Up. He just came out of a bad situation with his Ex. and here you are playing him. I am sorry to be so harsh but if you end up sad and alone it is very likely of your own makeing!