When did somebody make you regret being generous to them?

A girl I work with. She's one of those people who works two jobs but still bums it at friends houses and has no car and is always complaining about having no money. (She spends it all on weed/music festivals/concerts/clothes/makeup/drugs/food etc) she gets people to give her rides everywhere or takes the bus last resort. at first I felt bad for her because she gave me a sob story about how she doesn't know her dad and her mom is psycho so she basically has no family. I would give her rides to/from work. She would always promise gas money that I would never get. If I would go get food on my lunch break, she'd ask me to get something for her and she would "pay me back later". After a few times of her not paying me back, I started to lie and say I wasn't going to get food when she would ask. If I show up after my break with food, she acts irritated "why didn't I tell her I was going to get food? she's hungry" Then she starts asking if she can go "sit in my car" during her breaks. I let her even though I don't like it. Then she starts asking if she can take my car to go get food and that's when I finally said no and she got mad at me for saying no. She asked "why not?" I told her I'm not comfortable with anyone else driving my car. She then proceeds to try to argue about it, say she'll be careful and I don't have to worry blah blah and I'm like dude I said no. No means no. Now I just tell her no when she acts to even sit in my car and she finally stopped asking me but I had to make it awkward first. Basically anytime she gets the chance to help me out or do something nice for me in any way, she chooses to be selfish instead. It sucks when you first meet someone and you think they're a really nice/cool/genuine person - and then you realize they use everyone in their lives and always play the victim and can't take no for an answer. I play nice for the sake of no drama at work but I try to avoid her as much as I possibly can. She still tries to give me hugs and tell me she loves me and wants to hangout and all that so it's pretty awkward.

/r/AskWomen Thread