Relationship down the drain

Me and my partner had an arguement last night that has made us break up.

It's the day before my birthday we were meant to go to dinner with her family and me for my bday. We had to go vets around 5 for my kitten, so we went vets and on way home we were talking and then my brother calls me ( it goes through my speakers in my car cause of Bluetooth )

But I didn't answer I thought I would call him back when we got home! And she goes are you not going to ring him back? I said I will when we are home?

Oh well that was a problem:. Cause I didn't cal him back while she was in the car!!

WE WERE TALKING!!

So she was being all moody with me, I had to nip down to the little store legit 2 seconds down the road to get some cat food for my kitten to mix his medication in with it!

So I said I'll drop you and kitten home I'll quickly go grab some food for him.

As I was backing out my car I thought I better call my restaurant for tomorrow to book a table with my family! So I did.

When I got home she said " oh so you called him back did you" I said what? I was calling the restaurant??? This turned into a massive fight? And I still don't know why???

She ended up pushing me twice and calling me a cunt..

she said I upset her by not answering his call and by not asking her to come to the shop??

I'm legit stunned.. I'm so sick of walking around on eggshells and with her moods.

I didn't even do anything wrong?? I still don't know what I done wrong.

After she called me names and pushed me that was the last straw for me. I told her we are over and I am done.. and she needs to leave my house. But she wouldn't. She was being a smart ass. So I got my cousin to come over and remove her. I hadn't heard from her at all. No one msg last night. I wake up on my bday and she msgs me happy birthday and that she loves me like nothing happened. I haven't replied yet cause I am so mad that I let someone treat me like shit..