Mark has loved you since the moment you became friends. Yet he's been way too afraid to actually confess.

Due to the change in his life of going from a normal guy to a superhero, he's grown to be more brave.

He called you to hang out so he could get his feelings off his chest.

"Ew, look at those two. Can't keep their hands to themselves before getting home?"

You said before he could open his mouth. He felt saddened with your view on the couple as he didn't see anything wrong.