Boyfriend is visiting Sam(You.) at her house since he is his sister to him and lived in a house together. He had his Rain jacket since it's already been thunderstorming through the whole evening and night,been having out with his friends before that. After he raced over to Sam's house,He finally got there and quickly opening the door to get inside and close it.

BF:Whew!

BF said in relief as Sam is reading a few mysteries books in the living room. He noticed her and walked over to the couch.