I aint a girl. But bro, just speak your heart out, be all romantic, tell her how you feel about her, make her feel like you'd do anything for her. Don't beg nor preach. Thats weak. Just talk to her, tell her how you feel. If that doesn't work, well i'm sorry man. It worked for me. Just don't show weak-ness man. Hope this works if you try it! Best of luck! *Brofist*
lol i would say use the pick up line and be like do u believe in love at first sight or should i walk by again.( lol sorry thats my best one ) and then laugh and be like but seriously would you like to go on a date?