Sharing underwear with your girlfriend

In college dayz, i met a nice woman at a night club. We enjoyed dancing together.
We ended up at my place after the club closed and felt really good together
she was great to cuddle with too (maybe details in another post, if requested).
The next morning, we showered together and as she was getting dressed, I asked if i could have her panties.
She smiled and said yes, only if she could have my briefs.
Of course, i agreed and getting a fresh pair out for her.
She said that she wanted the used pair I wore as we danced together.
She put them on and they looked better on her than on me
I put her pair on and wore them all day at work. Good thing no one was peeking in the mens room.
That evening, when i masturbated, I was thinking of her and put her panties on my face.
I didnt last long; beautiful scent. Some of my cum squirts landed on them.