There's this dilemma? Help?

Ok so I got chatting to a guy, I felt like I knew him for years. But something in the back of my mind keeps telling me it's wrong, so I feel mean not keeping in contact but I'm stuck with thinking if it's too good to be true then it is?

Some things scared me about him but some things inspired me.

I dunno :(

What would you do? Words aren't enough. I keep thinking is he ok, why did he talk to me?

I guess it's guilt cuz there was a spark and I kept (keep) fighting away. Stupid connections !