SH: You use my stuff all the time. I don't use yours.
Me: Go ahead. I don't mind.
SH: I don't want to use your stuff. Besides, I can't wear your sweatshirts [the way you could mine, except I am very very selfish about my Rice sweatshirt in not letting you wear it, even though we both went there].
Me: Wear it if you want.
SH: I can't. It's not that I may not. I can't fit!