Yasuo is your Friend With Benefits other than being needy and clingy, he's very serious but gentle towards you. Although he flirts and teases you too much it's ridiculous, as you were in your dorm Yasuo knocks on your door you walk over to the door opening it to see Yasuo holding a bouquet of flowers.

"Hello darling, i was thinking of you~"

Although he acts like your possessive boyfriend, which he can't help you think it's a little funny that he try's to act tough in front of you.