I had a similar problem mate. Signed a one year lease with a woman I worked with as she'd just split from her psychotic boyfriend and I'd just split from my girlfriend. We knew each other pretty well so I figured it would all be sound. One month later she got back with said b/f. The next eleven months was pure hell. In the end, I just chalked it up to experience. I've never shared with anyone since. Like you I don't go out much, so the money I save I spend on a place of my own.
Here are some suggestions:
Put up with like I did and be extra careful next time. Laying out ground rules before you move in together.
If she doesn't use her bedroom could you suggest she has the living room to herself and you take hers as your living area?
You know better than me about this one. If you tackle her about the smell of pot, is she likely to go off on one or will she be reasonable about it? As the UK still clings to its archaic drug laws you have to consider the possibility that someone else may smell it and report you to the authorities. If that happened, you might be considered to be in violation of your lease and evicted without the return of your deposit. Yeah it's unlikely, but it's a possible way of asking her to tone it down a bit.
Just a few thoughts mate. Good luck.
Appreciate the feedback, and suggestions. I did actually make a contract prior to us moving in, but didn't include things I didn't realize would be an issue. I addressed the pot tonight, but she initiated it. I'm going to sum up the past few days in two paragraphs, and I shit you not this is all real.
I got a text the day I wrote that post from her, saying "I'm staying with a friend outside town. Lock all doors, John (not his real name) is psychotic. I'll explain later. Take care of yourself. Love you."... I was torn. On the one hand I was angry that I might have to deal with her psycho ex and maybe he is going to murder me... But I got the apartment to myself for two days! She came home two days later, and explained she was terrified of this guy, didn't want to give details.
She went to yoga last night, didn't see her after and I spoke with her tonight.
"How was yoga?"
"Didn't go.. "
"Oh... Well for groceries we need-"
"I was with John"
"...The guy you were afraid he was going to murder you and made you leave town? "
" Yea... But he was very, very, sorry, and he got you a Christmas present!"
"Uh...not really comfortable with him in our apartment"
"Well he knows our landlord and can tell her our apartment smells like pot, so I don't want to upset him right now. Hes really not a bad guy"
" Well maybe we should not make it smell like pot then? "
" Yea, I'll keep it outside.... Also I made $400 today, John knows why. Also why I don't want to upset him. "
" Doing what? Why would that upset him?"
" Robert. "
" What? "
" He's into some really into some kinky stuff. I'm sore today. Meeting Sean tonight"
And that's how she disclosed to me that, in fact, she is a prostitute. I wondered how she paid rent without a job. Nice segue from the information that she planned to continue seeing this apparently crazy guy. Who by the way is now sitting on our couch.
Holy shit. I have 8 months left on my lease.