No Attraction

So I'm suppose to go out to dinner tomorrow night with I guy I met at school. Our personalities fit and I like him...but I think more as a friend. I'm just not attracted to him. I was going to give him a chance but I can't fake. How can I cancel without hurting his feelings or how can I tell him that this is strictly friendship? 

Do you only date people if you think they can be potential boyfriends?  Do you have to have sexual attraction and infatuation to enjoy someone's company?

Edited to remove useless personal information. 

I don't mind going out just to have a good time. I just don't want him to think I'm interested in something more when I'm not.

Go out, have fun with a friend, and tell him, you aren't interested in a relationship right now. If he wants details, just say you aren't comfortable talking about - no guy is going to pry for details. Pay for your own things, as you would if out with girlfriends.

Don't miss out on a fun time due to someone's physical appearance. you said yourself your personalities fit. Plus, he may not be that into you either, and is just seeing also.

So, just go have fun! :)

I went out in an innocent date with a friend who I liked, but not that much and definetly, he was not into me either, we had a great time and have kept dating for 23 years, oh yeah I married him 22 years ago, you just never know unless you go out, be clear about your intentions, and the rest will be taken care of by itself. You don't know where mr right will be. Just have a good time, if he is your friend, he will support you...