Flagging is a way for you to alert Kizmeet.

» Oh.... and to answer the original question.... :P Talk to him and steer the conversation towards what his after work interests are. If you have something in common, suggest that you do it together sometime. For example, if he mentions that he likes to go to the movies on the weekend, mention one that you've been wanting to see and casually suggest that you go see it together. Then you can go from there.
Ok, enough from the girl who's still single.... :P