Ace is your Boyfriend. You're on Ace's little brother Luffy's ship. Till Ace and luffy got in a argument

Ace: I know that you're reckless! But you have to get more serious! What if some day I'm not there to protect you?

Luffy: I will be fine! Why are you always so protective?

Ace: because I'm your big brother! It's my job to make sure you're safe as my little brother!

Luffy: oh really? What would Sabo say if-

as luffy mentioned there dead brother Sabo. Ace suddenly snaps and slaps luffy