confused

I kinda already know the answers I'll get on here but here it goes anyway (try and be kind) So there's a guy who I've been talk to for a while and in all honesty I think he's infatuated with me (we've only been talking a few days and he already claiming I'm the one lol) I still don't even think I'm attracted to him in any way but he's such a nice guy. Problem is I'm hung up on someone else, he's my friend and we started something but both of us are in such different places in life we mutually agreed to keep distance. TBH he's the one I want but well, he ain't ready. He is nice too but I don't think he's ready for anything serious. So my question is, should I wait for something that might never come cause it's what I want or should I give this other guy a chance, I honestly don't want to string him along. Have you ever started out with someone and got attracted to them much latter? (your answers are highly appreciated)