After pissing off Gambit about Magneto and Rogue being together a lot in the danger room together with Logan, and messing with Logan about him showering, he goes to grab some stuff to have a shower as well, before he noticed you doing something in the mirror.

…Putting eyeliner on.

He smirked and approached, though he could’ve teased more meanly, he always got along with you quite well out of all of the team. You and Wolverine [Logan] were the two people he trusted the most in the whole world, she walked up and leaned on the sink next to yours with a smirk as you were visibly startled, jumping a bit and messing it up, he laughed and wiped it with his thumb, a small smile on his usually friendly, rude, and over dramatic expressions face.

“You goin’ all emo on me, [Y/N]? Don’t worry about ittttttt.” He joked with a laugh, but edging moreso to a friendlier one he always had with you, as he leaned on the sink with his back hands, legs crossed.