<human>: My girlfriend smokes weed almost everyday and any day that she can. I used to enable this addiction of hers by letting her smoke in my car when I would come over each night. However I've stopped letting her do that because I feared legal repercussions as well as problems with my family as they believe that weed is meth(lol). I have no problems with smoking and I don't think marijuana is a dangerous drug, however she is addicted to it and it's affecting our relationship is multiple ways. For one, if I don't let her smoke she get's upset and irritable for the rest of the night and will hardly talk to me or just be salty in general with her responses and anything sexual is off the table. She claims that smoking calms her down and that it helps her forget things in her past and takes her mind off things, which I agree to a certain extent. However you shouldn't need to relieve stress like that every single night. Secondly, if I don't supply her with the weed she will go to some of her so called "friends" which she claims although they are just shady drug dealers around our age. She has no money, she only just met these people through mutual friends, and yet they will let her smoke whenever she wants. I've never met them and I feel betrayed and manipulated each time she threatens to go smoke with them. She's very secretive about these so called friends and will not let me see who she's texting and is very secretive when it comes to her phone in general. I've talked to her multiple times about it saying that if she keeps seeing these random people to go smoke then you're just going to be skating on thin ice with me. I've told her that she has a problem and her addiction is affecting our relationship. I've talked to her almost every day about it and it seems to just come back to "it calms me down" and she won't admit that her behavior is toxic and scary. I'm not sure what to do or what to tell her anymore and I'm afraid there needs to be an ultimatum to stop this behavior of hers.

Could you distill the essence of the text into 1-3 sentences?
<bot>: GF gets upset and irritable when she doesn't smoke, hangs out with shady people I don't know in order to smoke, and can't go a day without it. She's secretive about her smoking life.