Do the Strat Hats actually have romantic moments? Oda sure doesn't focus on love but there should be some hints regardin Straw Hats that love someone, even if is shown briefly.
Usually this question would be very broad but One Piece usually lacks romance. Sanji doesn't count. Don't talk about him cause it would have no end. He's just on the receiver end (for example you might say Nami likes him because of a certain scene...) unless you suggest there's someone more special to him than all the rest, then again shown somewhere in One Piece.