tickle her is a good answer. do what girls see on commercials. working out would prob do good but dont do it like right infront of her, make her walk out and shock her, she'll be like oh damn you work out, and just be like shhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh yea, i got lil muscle going, flexs alittle, sometimes girls like a honest honest guy and they think thats hot. call her sweet tell her shes attractive. don't do any guy things like, fart in front of her and be like hell yea thats a good one.