It's clear this guy knows him. Steve is at a loss since that clearly means he's from another universe or a future point in his timeline. One that he gave up on once he'd decided to not go home. But maybe this was proof that, either way, life moved on. Steve would need to worry about that later. For now he's just interested in figuring out who this is.

"Those are fighting words," Steve teases gently. He steps forward and extends a hand toward the other man. Closer now, Steve can almost see a passing resemblance to Wanda. It makes him wonder if this is another sibling. Or, perhaps, a child? That would definitely lead to some questions from Steve to Vision...

"But I'll let it slide, this time. Seems you know me. You are?"