Scandia
You never know til you try. Just still maybe ask him out for drinks or coffee or something. Even if you don't date, you could make a new friend! I don't want to question your initution but this guy and other girl might just be friends. Or he might have been going on a date with her and its nothing serious. And look at it this way, if this doesn't work out for you, it's get you some practice for next time!