Do men talk about sex a lot when they are emotionally attached to a woman?

I have been texting this guy and he is totally my type. But the thing is he talks dirty a lot and I'm starting to think maybe it's because he just wants sex from me. I talked about this with him, and he said he talks dirty because he is 'emotionally attached' to me. He often also says, 'He is in love' with me and also talks about the future a lot. Idk what to do here....