You should get to know him, take some time to understand what makes him tick. I recommend taking him on a series of dates, each time to a different location.
Date 1 - Start with a lite dinner and a movie, nothing too scary, but scary enough that he wants to sit closer to you.
Date 2 - A picnic by the lake, pack some sandwiches and some french champagne and hold hands until the sun sets
Date 3 - Dinner at your place. Invite him around for a candlelight dinner. Cook your famous spaghetti bolognese. When dinner is over suggest that you take the party to your bedroom, where you can pretend things are moving too fast and ask him to slow down. Then once you've ruined any chance he has of "getting lucky", kick him out and never call him again.