Imagine: Pietro showing off in front of you.

You had been teasing Pietro about how all of the other mens' super powers were really awesome and Pietro could only run fast. So, being the show off he is he smirked at you and quickly ran away from you leaving you stunned.

He returned soon after with chocolate, ice cream, and flowers. He then kissed you, before pulling away.

"Bet you think my powers are cool now."