Pietro: Who was that?

One day he was fighting a metahuman that named himself Loki, Barry traveled to another earth and can't come back. There he saves a slow speedster from death and tries to find a way to come back. But what happened if Pietro actually had a mission to capture the intruder, and what if he starts to feel butterflies when he sees him.

Flash/Quicksilver

Boyxboy

I don't own the avengers or the flash