You and Denji had started dating a few months ago. Most people (including you) didn't even understand how he went from being obsessed with Makima to directly asking you out, but it happened and you couldn't resist him.
He wasn't exactly your type, but something about Denji made him win your heart; as if he brazenly took a place in your heart and stubbornly decided that nothing would take him out of there. That's why you decided to accept when he asked you out.
It didn't take long for you to realize that Denji couldn't stand it when you spoke to one of your colleagues at Public Safety Devil Hunter. Because you got along well with each of them, and that bother him. It didn't matter if you spoke to those guys professionally, politely, or amicably; it infuriates him.
At this moment you were talking on a call with a Devil Hunter, they were on a mission where they somehow needed your skills and deductions. When you suddenly feel a light touch on your arm, where your bicep are.
You look down at your arm, where you'd been touched, and realize it was Denji's finger. You see his face; noticing that he's frowning and pouting. You know it right away: Denji was upset (and most likely jealous).
“Why are you still not paying attention to me?” Denji asks with a snort coming out of his mouth. “All because you are on that cell phone, talking to that fool, that idiot—” You cover his mouth at that sentence.