What would you do if your roomate stole your car for hours at night while you were asleep.

It can depend upon a few factors, such as the state/city and how long they have been residing there. If they stayed for a few days, they are guests, and you can inform them to leave at your discretion. Once they have established residency, it can be a bit more difficult to evict them, even if they have not paid anything.

You do have a bargaining chip, however, because they stole your car. Tell them that if they do not leave, you will call the police and have them arrested for the theft of your vehicle, and once they're in jail, their stuff will not be warehoused, and will be put on the curb at the first legal opportunity to do so. Cut ties with these people, and get them out of your house.

Call the police and find out if they can be removed. If there was no rental agreement, then have them removed. Once a user always a user of other people.

Tell him go ahead call the law I'm sure you've got quite a few crimes on your person now get the fuck out of my house.
If you are physically capable of it I would suggest you grab Boyfriend by his shirt and throw him physically down the stairs and tell the crazy drug addict bitch that she and her boyfriend are never welcome in your house again and the next time you see them you're going to call the police

Unfortunately in America there's a thing called squatter's rights. I'm pretty sure most other Progressive countries have them too. Why did you let them stay with you? People aren't homeless for no reason at all. If they were hitting you up for a place to crash it means they burned their family Bridges already.

File a police report on them for taking your car without your permission.

If you're in the US, google squatters rights for your state. There are differences from one state to the next. But at least in my state, if you were allowing them as guests and they were paying no rent, they have no squatters rights.

Unfortunately there is a thing called squatters rights.You will have to have them evicted.File charges about the phone and car.Keep your stuff hidden from now on.

No good deed goes unpunished.

They're full of it. Give em some hours to hit the bricks before you call on em for trespassing. Stand your ground.

It doesnt matter what they say.If you do not throw them out you will deeply regret not doing so,and you know it.

File charges about the attempted phone theft and unauthorized use of a motor vehicle ...

Don't let them stay you can't trust none of them.
Hope you got your stuff back buddy?

Call the cops on them man.