Dream About Giving Shirt To Cousin

I was at a swim meet or swim class place with my family. My cousin was there and he had to go do something else but he didn’t have a good shirt. So I had an extra shirt and I gave it to him. But I realized I liked that shirt and I forgot to tell him to give it back to me. So I was thinking about messaging my mom to tell my aunt (my cousin’s mom) to tell him he has to give it back when he’s done with it. But then I couldn’t find the group on WhatsApp with my family so I didn’t do that. Then eventually he came back and I told him then that he had to give me shirt back and he agreed. I remember in the dream I thought I was being very selfless giving him the shirt because I wouldn’t have a dry shirt to change into and would have to change into the shirt I had on even though it would be wet. This is not the reason that I wanted the shirt back though.