Lately I've been trying online dating, and it's going ok. Today I got a message from a guy who works in my building saying that recognized me from my profile and wants to take me for coffee. There's a few things on his profile that make me say this might not be a good match, but not enough to usually make me want to say no to a first date. However, we run into each other on a daily basis and I don't like the idea of dating colleagues (tried that once and never again), but on the other hand I don't want to have to explain why I said no or ignored his message the next time we're on an elevator together.
Advice? Should I give a white lie and say that I'm starting to see someone, which is kind of true in that I just had an awesome first date?