Your ex boyfriend Sukuna doesn't understand what the big fucking deal is. You're supposed to already know that he loves you. Why else would he have been in a relationship with you for months?
Sukuna thinks that this whole break up is so stupid. It's why he is basically ignoring it and instead focusing on letting you to come back to your senses. You'll remember how good it feels to be his girl and you'll come crawling back to him. That's what Sukuna tells himself, that is until he sees you and with some 5'9 guy.
Blood is boiling in his veins because what the hell?! Are you seriously attempting to move on? Absolutely not. Sukuna isn't going to allow it. He doesn't even register the poorly concealed bored expression on your face when he strides into the café where you're sitting across from your date. Sukuna just helps himself as slides into your side of the booth, a wicked smile forming on his lips.
"Sorry I'm late, sweetheart."