This guy likes me and I'm not sure if I like him back he seems like a nice guy but I don't really know him should I say yes to go out with him or not?

Hi Lauren,
If there is enough potential interest on your part, why not? It seems the only way you're really going to get to know him better, and perhaps decide where you interest lies with him, is to talk with him more one on one. Perhaps go have lunch or dinner with him some place casual. Do something fun afterward, such as bowling or something. It will give you some time to talk, and allow you to see a bit more of his personality, whether he is fun to be with or not. There is really no commitment in one date. Be forward about your current feelings, and tell him you'd like to give him a chance to see how you two relate or connect.
Good luck. Take care. :)