Iint regret your engagement to your partner?

Just one more thing...if you do end up breaking up with her, she will do her same old thing of calling herself stupid and apologize and all that, but it's all just manipulation. Its trying to guilt you, so just think with your head, not with your heart. Because emotions often take over logic.

Jeez... Where to start with this...

First, I think that dirtybirdy's replies to you are very sensible and you'd be wise to take what she says onboard.

It's always hard to understand the dynamics of a relationship when all you have is one side of the story, and that's limited to just a few lines of text.

However, everything you say in your OP and in your responses to dirtybirdy makes it pretty clear that this is a very unhealthy relationship for you because you're being used. Perhaps this is due to deliberate manipulation on the part of your fiancée (and possibly her mother), or maybe you're in this situation because you're someone who has security and self-respect issues and so needs to feel needed. Whatever the reasons behind you finding yourself where you are today, you're clearly not happy. This isn't surprising since it doesn't sound like you're being treated with respect, never mind with any degree of affection or appreciation.

How you describe the situation around you asking the woman to marry you strongly suggests to me that you're basically insecure and you have doubts about your worth and attractiveness. On the plus side, it seems you do have enough self-awareness to now recognise that your motivation for asking her to marry you wasn't positive or healthy in the sense that you knew this was the woman you wanted to spend the rest of your life with, but was instead based on negative reasons. Given your situation now, surely you must see that becoming legally entangled with this woman (and her mother) would not be a positive step for you.

It's normal for relationships to change and become much less exciting or even kinda boring over time, but I do find it odd how you seem to be suggesting that the woman was wonderful a year ago, but she's since turned into a total slob, waster and user. People can change a little over time, but unless there's a psychological or drug abuse issue at play, it's not normal for people to change drastically in the space of a few months. So it seems to me far more likely that what's altered is your perception of her, and you now can see that she's not someone you want to spend the rest of your life with. One thing you can be sure of is that it would be extremely foolish of you to believe for a second that there's a chance in hell that she's ever going to transform into a person you can be happier with than you are right now. That's not how people work, and the fact that she apparently refuses to even listen when you try to talk to her about your dissatisfaction with the current state of affairs indicates very clearly that she has no interest in even trying to alter her behaviour.

I find it interesting how you've maintained your own apartment while you've been living with the woman. You say that this is purely for practical reasons, but I have to wonder if some sensible part of you always suspected that the relationship wouldn't work out, and so you've been careful to maintain an escape route.

I fully understand your reluctance to break a commitment you've made and your sympathy for the woman and her mother is laudable on the face of it (although it sounds completely unjustified and the dynamic is perhaps even pathological), but the bottom line is that you bear no legal or moral responsibility for their happiness or physical well-being. You are, however, responsible for your own happiness and your own physical and mental well-being. It's pretty clear that some impulse has been making you give this a lower priority than any reasonable person would expect you to do.

Life doesn't have do-overs. You now understand that this relationship isn't good for you. You also know what living with the woman is like, and you can see no signs that the relationship or your living conditions are heading in a positive direction. It's your choice how you spend the limited time you have this world and who you spend that time with. If you feel that, on balance, the positive feelings you get from helping the woman and her mother cope with life are more important than your own happiness, then you're free to sacrifice yourself on that altar. But if you have enough self-respect to believe that you deserve more than to be used and abused, then you need to find the strength to tell the woman that you can't go on, pack up your things and head out the door.

Finally, if the thought of abandoning the woman and her mother to their fate is really too terrible for you to even contemplate, you might want to consider that there's at least some possibility that you removing the crutch that you've become might motivate them to take a long, hard look at their life and begin to take some positive action to sort it out.

You shouldn't propose to anyone unless you want to get married, and truly want to spend the rest of you life with that person. It's unwise to propose to someone for the sake of your ego, jealousy and to make a point.

Also what do you mean when you say, "Iint"?

Brake is when you put your foot on the brake in an automobile in order to stop moving, and break is when you break something apart as in the breakup of a relationship.

My bf has great dental hygiene I love it. I say leave her

Sucks to suck.

Ummmmm.... this is all sorts of messed up. Regretting it is the only normalish part of this wonky tale of woe.

Are the issues something you can talk through with each other? I think you should try that first because sometimes that's all it takes but if that doesn't work out, it's okay to call it quits and walk away. Sometimes three years is too early to propose to someone and see if you're compatible.

Wait you proposed to her a year ago but haven’t been intimate in over two years?

So you stopped sleeping with each other and then you decided to propose more than a year later? 😂