DP just called DD ungrateful - I’m fuming!

I'm not sure if this will improve things for the OP.
This man presumably knows it'll be hard for her to make him leave the place and that's why he feels able to get away with this behaviour.
Yes we can say he deserves to be treated as you describe, but (given what we know about his character) how is he likely to respond? I think if she is unpleasant to him he will punish her by being even more unpleasant. If push comes to shove who will come off worse?

The other way to approach the situation would be to say that as he is on the tenancy he has to pay bills. So he needs to pay half the rent and half of all the bills and half the food shop. It’s that or he leaves. He won’t pay and if he won’t leave you might have to find somewhere else.

He’s really got himself a great deal, hasn’t he. No wonder he gives you the ick more and more. He’s a giant ick on legs. He even gave you a hint - he wanted to be on the tenancy for his own security. He knew you wouldn’t be able to throw him out if this happened! I’d start by telling him you’re struggling and he needs to pay half the rent, but more shopping etc. Start nagging him to do housework more. Cook dishes you know he doesn’t like. Stop sleeping with him, doing his washing. Make his life with you much less easy and enjoyable- might make it easier to get him to leave in a few weeks. And don’t do a wonderful Xmas. Go to your mothers or something. Plus - show him how over emotional you women can be! Play his game right back at him.

I would think about taking legal advice without him knowing too.

The issue is that they have to actually move out in order to end the tenancy. They can do this, and theoretically the landlord can give OP a new tenancy starting the next day, but if she doesn't actually move out then the tenancy doesn't end, and it's a way of tricking the other tenant into moving out essentially which is considered to be depriving them of lawful access to their property. Even a landlord who signs a sole tenancy the day after a joint tenancy ends could be liable for being sued but would be less likely to lose if both tenants had actually moved out and vacated the property.

If it’s a joint tenancy, only one person needs to give notice to end it. Speak to your landlord about giving notice and renting it again individually. I’m sure if you’ve been a good tenant for all this time they’ll want to keep you.

He's done a number on you OP.
You're a decent person who pulls their weight & treats others as equals, you thought if you were generous to him he'd be generous in return.
The phase when things were going well, that was him keeping you sweet until he had his feet under the table, until he had enough leverage that he could start exploiting you.

You need to kick him out asap. He is a freeloading twat, who is now making digs at your 14 year-old daughter. Don't subject her to that.

No expert here but I thought a rolling tenancy just means that the landlord can give you a month's notice to evict you or vice versa (unless the contract says otherwise eg 3 months notice). So why not just get landlord to give notice and OP sign up to a new 12 month tenancy as I said? Doesn't seem that challenging to me - assuming landlord is willing to play ball.

In any case OP if he won't leave then suggest you give notice on the house, he clearly can't stay alone, bit tell the landlord you would like to sign a new contract if possible. Sorry you are in this horrible situation with this stupid man, gah.

Calm down

No she doesn't 🙄

Ah, ok, I didn't see she was on a tenancy, I only read that it was her house. Meaning I thought she owned it. My mistake.

Will you calm down? You can't get the police to remove a man from his lawful home unless he's committed a crime.

Because he's on the tenancy FFS she can't do any of that

Are you serious? You CALL THE FUCKING POLICE! That's what you do. Christ.

Tomorrow night? What the? Are you serious? End it NOW! I would be soooo fucking furious I'd say 'I want you out of this house RIGHT FUCKING NOW! I mean it! Pack and bag and I want you out in an hour, if not I'll call the police and have them remove you!' I'd literally storm in the room with a bag and throw it at his fucking feet! (or face). Why are you not doing something now? Get your backbone and evict him this second!

Break ups are really, really hard. I’ve been through a divorce so I hear you, I promise I do. But you deserve better.

So, he was paying half all the bills from the moment he moved in and as soon as he went on the tenancy, he stopped paying? Because I don’t know how you can say that it was all going well at the start if he actually wasn’t contributing at the start of living together either.

It’s not right that you moved a strange man into her house who she doesn’t ’care for’. Imagine that in YOUR OWN HOUSE. And at such a vulnerable age. What were you thinking?

When I first read this comment, I thought, “woah, harsh!” But actually. Would no man at all be worse than this? Probably not.

You can't just remove someone from a tenancy! The landlord would need to give them both notice, then potentially relet to the OP alone but if the partner refuses to leave it would have to go to court etc.

Sounds an over reaction re this specific issue, but as it sounds the relationship isn’t in a good place anyway, that you should call it a day.

Tell him the relationship is over, he needs to move out, move yourself into a separate bedroom and stop doing anything for him.

If he wants to stay he will have to pay half of everything.

If he really refuses you will have to move out (give notice to the landlord first) but he probably won't want that as he will have to pay the whole cost.

Chances are he'll bugger off once he realises you're serious.

The snide comment would totally give me the ick. He's making it about a teenage girl who isn't even his and he pays nothing towards. Yuck.