I feel like I give up a lot for my sister
I (15tm) have a younger sister (9), and I feel like I have to give up a lot of stuff for her. I have an old 5 gallon tank that she wants for a tarantula (not even the right size btw) but u already have plans for it. If we're at a store and I see something I like, and there's one left, she'll suddenly have interest in it and I have to let her have it instead. We share a room. She messes with and touches all my stuff without ever getting into any real trouble. I feel like a selfish asshole because my mom says I should just give her the tank.