<human>: I met my roommate, "Clare", about 2 years ago when she answered my ad for a roommate. She came off as being very nice and somewhat quiet, doesn't make a lot of noise, and seems very genuine and down to earth. For a year and half, everything seemed totally fine; no issues or problems, she mostly keeps to herself and we talk in passing, and occasionally go out together as friends when there's nothing to do and we aren't expecting company. Life was just fine; and we were fine with our arrangement.

Then things changed after the New Year. Around that time, Clare started going out a lot more, and started bringing different people (she identifies as pansexual) over to the apartment and would have sex with them, and they would either stay the night or leave. I noticed most of the people she was bringing home were younger than her, mostly people my age; 18-24, single, college people with not much to do. 

It's starting to interfere with my life in a number of ways. I've had things of mine go missing (an iPod, a couple of my clothes, a nice leather wallet [luckily nothing was in it], and some of her stuff). Also, she brings these people there around 2-4 AM, while I'm trying to sleep, and Clare isn't very quiet during her escapades, which leaves me awake at night. I also caught her and one of her hookups in our living room when I was coming in from my own night out, which I'd rather not see. I've tried to talk with her about these things but she always tells me the same thing: As long as she pays her half and fair share, I shouldn't worry about it. I went to our landlord about the situation and she said that unless I can show that something criminal is going on or Clare chooses to move out on her own, I really don't have much to stand on.

So I don't know what else there is to do Reddit. I can't afford to move out on my own and I haven't had any takers for a new roommate yet. So what can I do?

Could you distill the essence of the text into 1-3 sentences?
<bot>: Roommate is bringing people over to play have pop pop; things have been stolen and causing issues, can't find way to get rid of her.