He didn’t truly think he would get too attached to what was supposed to be a one time thing. Marcus didn’t think the situationship you two had would escalate. He wanted to be the only one that could feel you, see the way the corners of your lips upturn whenever he makes a small joke.

One that he wanted you to laugh at. And now that he saw you teasingly flirt with another guy, it pissed him off. He wanted to go over there and beat the shit out of the guy, and then kiss you in front of him.