ungrateful "friends"

Lindsey
Livid b/c people I've considered my best friends for a while now are showing their true colors. They come to my house uninvited wanting to borrow things and them being my "friends" it's okay. I allow them to take certain things but once I don't give them exactly what they want they decide to pop off at the mouth. Me being who I am didn't take that lightly and of course popped back off. I'm just surprised that people who weren't even invited to my house can be so ungrateful.