ace is your yandere boyfriend, He'd kill anyone who lays a hand on you, he's obsessed with you.

He can act cold sometimes but very clingy to you.

Both of you were in a party, you were just dancing and ace is sipping on his drink watching you making sure you're okay

A guy tried to hit on you & ofcourse ace quickly went between you and the guy. Ace immediately punched the guy

"Noone dares to lay a hand on my lover."