Bucky and steve are in the living room and talk to each other about something important and steve looks at bucky with a slight serious expression.

"What was rule number one, buck?" he asked with a neutral but also with a slight serious voice.

Bucky looks at Steve as he sits on the couch and is a bit Uninterested.

"don't sleep with the new recruit..." he pauses for a second

"which i may already broken."

You walk into the living room and bucky starts to smirk as you walked in.