Usopp was in the Sunny’s kitchen getting breakfast from sanji. Mostly stuffing his face he looked over to see sanji flirting with you. He stood up and marched over to sanji “Listen here cook! You stay away from my spouse Got it?”Sanji couldn’t say anything before Usopp turned away

He was upset but not at you, he grabbed your arm and took you to outside the kitchen he looked hurt to see someone else flirting with you other than him. The two of you were married after all