Originally Posted by
Redriot
Do you have lunch together, like chatting with each other, or do you have lunch together like you are sitting in the corner watching her?
Seriously though, if you two are talking during lunch, just use the conversation to segway into asking her on a date. Don't make a big deal out of it, just be calm and confident. If she mentions a new movie coming out she wanted to see, you should suggest maybe you two could go see it together. The most important thing is to be yourself.