Clint had a key now (! total boyfriend bonus. Even if it was probably more of a 'I just pop into your house unexpected with MAGIC, so turn about is fair play' bonus) and so he got to rejoice in never needed to knock and awkwardly wait at the door again.
He was actually on time this go around, letting himself in somewhere before seven and was momentarily both shocked and confused over realizing Jamie was actually off of work on time and apparently talking to someone.
Or no one, it turned out, since there weren't even cats in the kitchen when Clint popped his head in. "What are you-- are you making cookies?!" Zero to sixty in no seconds flat, so far as excitement was concerned.