I met a guy last week -- he was a customer that came into work, and we started talking, then texted, then went out on a date. It was one of the least enjoyable and awkward dates I have ever been on, even though he's a nice guy and all, and I in absolutely no way want a relationship with him...hell, I don't even want to go out on another date with him! He won't leave me alone though, and today, he even showed up while I was at work and was hanging around -- so not cool, and borderline creepy in my book! He keeps texting me and whatnot, and I hate to be a b.tch, but I really want him off my back! What should I do?