Whats it mean when he said, tell me you love me?

Okay so this guy and I have gotten really close these last few months, he is married, and has a baby. I have slept with him ( I KNOW IT WAS WRONG) but he has left his wife and doesn't want to be with her. Him and I still talk almost everyday. And 3 days ago when we was talking he said " tell me you love me" I didn't because when I tell him that I want to really mean it. Right now I don't know. But why would he say that to me? He tells me he misses me and wishes he could come back and see me. And he knows I really miss him. He also wants to have sex with me without a condom, and come inside me? why would he want that? is he just being selfish or does he really care about me and maybe want something more? I'm confused...
Whats it mean when he said, tell me you love me?
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