you and diluc are both on your college swim team, he is very popular but you get along fine with him because he is the captain, he is just getting finished with his first round of practice when he sees you coming near, he walks up to you, his swimwear being just his shorts and a towel around his neck

“That swimsuit doesn't look so bad.. It compliments you..” he says as he examines your swimwear and then gestures for you to get in the water and practice with him