Just been on Facebook and seen my best friend is selling some shoes she borrowed from me a couple months ago. She asked me if she could borrow them, I said yes of course. I hadn't asked for them back because I hadn't needed them, but I do want them back at some point! Anyway they are on Facebook for sale, I thought ok, she maybe forgot they were mine, but then I noticed there are 2 other things she's put on, gifts I bought her. One is a gift from a holiday, that I put a lot of thought into, and another a Christmas present that again, I spent a lot on and put a lot of thought into and she said she loved them.
How do I approach this? Am I being unreasonable to be pissed off?