I was recently dumped. I've been feeling ultra unattractive and undesirable and started working out. I've been trying to get back into the game but have been unable to open. Typically the open is given to me when they initiate conversation but that hasn't happened for a while and I'm trying to open a girl at my gym.

How lame would "you should smile more" be as an opener . She's rarely there and I've never seen her smile at the gym. I don't know if she hates the job or anything but I just want to get to know her to see where things go. Any opening lines I can use?