Most... Romantic way? Err, I'll try
((Imma skip the whole 'teleports to xxxxx' thing))
Bill: Hey Shooting Star!
Mabel: What now Bill? Another pick up line?
Bill: No, no, no! That was just a dare. I wanna show ya something
Mabel: Really?! What is it?!
Bill: *snaps fingers and a blindfold was on Mabel*
Mabel: Bill! What the heck?!
Bill: Sorry *teleports us somewhere*
Mabel: Where are we Bill?
Bill: *takes off blindfold*
Mabel: *jaw drops and eyes sparkles*
Bill: *hugs Mabel* Would you go out with me?