It wasn't hard to notice.

Ever since Wanda met you? Oh, she was infatuated. Your looks, strength, literally everything. She stared, tried to talk, stole a touch here and there, talked Nat's ears off about you, and all that. So, everyone noticed.

It was a pretty normal day. Getting on the Quinjet with everyone for a mission, doing said mission, getting it over with, and getting back on the Quinjet. As soon as you and Wanda got back on?

She was back at it.

Secretly glancing at you when no one noticed and whatever else someone acting like a schoolgirl with a crush would do. It was pretty noticeable.