You didn't know that Sideswipe has had a crush on you for a while, mostly because you were oblivious of how others felt and how you couldn't read the room.

Strongarm knew Sideswipe's 'little' crush on you for some odd reason. She would give you very obvious hints that he like you, which would lead the two to bicker, then fight.

Today was the day he would confess his feelings to you.