I think that's a bad timing to say u love them, bcs you're having s** w someone u like and suddenly confessed u love them, they might think u only love them for how good they are at s**
Now it's clear that the guy that liked Lee Yoonwoo was only interested in him, he js showed that he didn't rlly care abt what might happen to Yoonwoo at that bench they're seating at, what if Yoonwoo might trip since he's drunk and because he's an omega he might get kidnapped easily?