V2, fellas how do you break up with your long term life in partner?

I need to breakup with my girlfriend of 3 years who I currently share a lease with. I am a lost guy in my 20s and would greatly appreciate any sage wisdom the group can provide.

I pay the majority of rent and whatnot but am just gonna let the lease run out. I think it’ll blindside her but I’ve already made up my mind

Edit: sorry don’t post a ton on Reddit.

A lot of you are calling me a coward, you’re right. I had this conversation 3 weeks ago and I told her I didn’t think she was holding up her end of the bargain in our partnership, that’s what a relationship is, we’re partners.

Here’s where I’ve been struggling. A lot of the things I voiced were simple and those are the only ones I’m comfortable sharing. I work long hours, (12 hour days, lots of travel) in a very stressful job. In the span on 3 years she’s has made dinner 3 times. I had to break my ankle for it to happen, yes I had asked, I cook a lot and she always said she was self conscious about her cooking compared to mine. Another, she has talked more and more recently about having kids yet refuses to drive when I work in office everyday. Am I supposed to be a lifelong family chauffeur?

She was receptive, stopped drinking, engaged a therapist and had been making an effort. What’s been bothering me was how easy it was, like flipping a switch. Did it seriously take an ultimatum to someone I thought was the love of my life to start actively working towards a partnership, contributing? I know that’s the wrong way to look at a relationship but love only goes so far, a lifelong commitment needs both parties to be working together and maybe it’s just too little too late.

If nothing else Ive learned that love isn’t enough, I still love her and maybe realizing that’s not enough and we’re incompatible is just one of those shitty life lessons

I’m not sure what I’m looking for; advice, affirmation, someone to tell me I’m making a mistake? I probably just needed to express myself in writing so if you’re still with me thanks for reading.

Edit 2: I’m not a monster and I still care about her. I’m not kicking her out onto the street, I was going to pay for 2 months of rent and move out so she could figure something else out.