Hawks was testing out a few different potion recipes he found. When he wasn't in the room, Dabi come in. (You're Hawks). Dabi drink one of them, thinking it was strawberry milk... but it wasn't... it was a love potion. When Hawks came back inside, he was the first person dabi saw, so dabi feel in love with him, even more then normal. (You guys have been dating for 2 years now). Dabi started to become extremely clingy to Hawks

Dabi clinging to Hawks tightly on the couch as Hawks tries to watch the TV. Hawks was both annoyed about but liked how Dabi was acting