"Tony, focus!  "Happy said and gave Tony a big thump.
Indeed, he was busy looking at you while you were visiting the Avengers' premises. You were the new recruit and Steve was showing you around the gym. As soon as you walked in, Tony noticed you.
After taking a hit, he heard you laugh softly.
"Are you okay?  "you said gently.
"Um, yeah?  "he said, a little confused by the shock.
"I'd like you to meet Tony Stark. Tony this is y/n.  "resumed Steve
"Nice to meet you" you answered smiling.
You and Steve left the room and headed for the other rooms while Happy gave Tony a knowing look.