Please read until the end. There are details you will need to know towards the end of this post. Sorry for the long post

My girlfriend and I have been together for 10 years and lived together for 5 years. My girlfriend gets along with my dad’s side of the family really well, she loves them and gets excited to see her and they adore her and love seeing her. My mum on the other hand, claims to love my girlfriend, but my girlfriend thinks it’s the opposite.

For the last 5 years we lived with my mum as part of it was covid and we couldn’t get anywhere and then it was a housing crisis and didn’t get accepted for anywhere. We have just gotten our own place. My mum has a partner but once a year they take a break from the each other for about 2 months. So most of the time my mum would be at her partners house and my girlfriend and I would have the house to ourselves. My girlfriend and I always made sure the house was clean and all bills payed for on time (we payed $300/500 rent. So when my mum and her partner would take a break, is when my mum would move back in.

My mum most of the times says/does things to offend my girlfriend when I’m not around and plays happy family when me or other people are around. She’ll say she loves my daughter and she’s glad we’re together when other people are around.

Things my mum does to upset my girlfriend: - -My girlfriend and I would go to a lot of football/AFL games together, nearly every home game for my team. Mum and I would go once a year to them. When my girlfriend told my mum how much she enjoys going to the football with me and how often we go, my mum went out and got a membership so she could go with me every weekend too. She has done this with multiple things. If my girlfriend brings up something she likes doing with me, my mum will try and start doing it too with me or planning things and leaving my girlfriend out of it

• My girlfriend would cook my mum dinner when her and her partner were on break and my mum would ignore her when she would be given dinner but thank me for it (I wouldn’t cook it). She’d then say thanks at the end of the meal only if I was there and could hear it

• My mum told my girlfriend that she looks like she has fatty liver disease (my gf is 5”3 and 64kgs, so is quite small) and eats healthy and has a physical job

• Yelled at my girlfriend that I pay all the bills and she’s taking advantage of it (she doesn’t, we pay bills 50/50 even tho I earn more)

• My mum was drunk and told my girlfriend that I didn’t have to marry her (my gf wants to marry one day) because she was with her previous partner for 15 years and they didn’t marry, so we didn’t have to

• I hid Easter eggs in my mums room for my girlfriend. Mum got drunk and pretended not to know who’s eggs they were and started eating them

• Called me and my girlfriend ‘lazy c**ts because my girlfriend wanted a robot vacuum

• Told my girlfriend travelling to Europe was a waste of her time, asked us to go to Thailand with her instead and when we said no, she got angry and started swearing at us

• Told my girlfriend that if she knew anyone wanted to cheat on their partner, she’d tell them to do it in a different state so that they wouldn’t find out (right before my mum and I went interstate)

My girlfriend doesn’t want my mum to join us as often for things like footy and doesn’t want her to tag along to things, but what can I do, I am the only family my mum has and my mum doesn’t have lots of friends, only a few. So it’s not like I can just leave my mum out of things. My girlfriend is also uncomfortable with me going out on weekends drinking with my mum, from a few comments my mums made in the past (infidelity, strippers, brothels)