Most Helpful Guy
I'd recommend at least going on the first date. Who knows where it could lead, you may even end up pleasantly surprised. If you're not enjoying it, nothing's stopping you from cutting it short. And if you didn't enjoy yourself and asks for second date, diffuse the situation and make it a "friends" thing or just say you don't think it's a great idea.
You could also purposely do things that you think might turn him off if the date's not going well, that may put him off from pursuing other dates.