Drop down in front of him/her and if they ask you whats wrong say "I'm sorry but my heart stopped when I saw you and i just fell for you".
Excuse me, but I think I left your sunglasses in your pocket. Mind if I check?
Hey baby, your phasers must be set to stunning.
Don't believe the rumours you've heard...the Bubonic plague didn't affect my important organs.
What is your first name? Hmm, that goes kinda well with my last name.
Being with you makes me want to stop studying. Almost.
Hey, want to be pirates with me? Maybe we could hook up.
Can you be the moon of my life?
I almost got arrested for smuggling these guns into Mexico! (looking at arms)
You're so hot you make my teeth sweat...