and I've even told her I wouldn't mind a 30/70 cut or a flat cut or something

It was just a point of discussion. She put all the money, down payment, on the house, it's in her name, I did all the labor and work. Half and half is definitely the fairest cut, I simply just did not want to be seen as taking advantage of her. Most people refer to it as her house, just because it's in her name and she put the money down in it, when it's very clear that I did all the work and it was a formal business agreement we went into from the start.

The long and gist of it is that she neglected me for 2 years and withheld sex from me

What can I say, when you love someone you don't want to leave them and want to work things out. She finally started to work things out when I was leaving, so it was quite confusing, hence me staying around when I should have left earlier on, even us still texting after we split, etc. Like she was perfect once I was one foot out the door. But then she just flipping out about me going on dates and such has just pushed me away... Either way, I 'manned up' on this dude.

In fact, I would rather they think I was assaulting her,

This is purely a business perspective. I would rather the tenants think I'm the crazy one that hit her, as I no longer reside there, than they think that the current property manager they live with is the one that is unstable and violent.

The tenants need to feel safe, and everything I have done in the last 2 years has been for this house. This is also why I am so upset now about her deciding to fuck me over on this. This was my house, and she is well aware how much it means to me and how I was the one who solely built it (as agreed upon).

Dude, this woman violently assaults you and is trying to take the house you built.. and you are making excuses for her.

I just know she is hurt, that she loves me and doesn't want to hurt me... but it's what she's doing. She's mentally unstable, but her short term 'get him back' is going to result in long term pain and consequences and courtroom bullshit.

You know why she treats you like total shit? Because you let her. This is why I said you were a pussy.

Fair enough, which is why I broke it off with her. She treats me like shit just like my mother did.