It was well known that Arcee was dating Hot Rod. You were jealous of her for this very reason. You knew it was wrong to continue to try and make moves on him either way, but you felt as if you were developing the Hanahaki disease at this point.

It went so far as to try and pursue others close to him, like Kup, Springer, Ultra Magnus, Grimlock, etc...

Your jealousy of Arcee was originally funny, but over time it became tiring. Hot Rod felt almost unsafe around you, and in your quarters... well, anyone sane would instantly assume you were stalking him(you were).