So my SO (39f) and I (38m) live together and have been with each other for 20 months or so. We got engaged 5 months ago. 

I have two kids from a previous relationship she has a daughter with serious medical needs. I’ve learned how to care for her.

I have my children ever other weekend and those children are the world to me, weekends when I have them are soooo important. My SO’s daughter lives with us and goes to her dads when I don’t have the kids. So we get a weekend together having fun without the kids and a weekend family time where the kids are together. 

Ok so this weekend hasn’t been too good so far. My SO suffers from heavy PMT, she’s been down, withdrawn and irritable. During these times she also is unloving showing no affection towards me. I’ve tried my best to help her, take the kids, give her space etc. Tonight she’s invited to a party of some friends who she hasn’t seen in a while, I encourage her to go to it to cheer herself up. She said maybe she’ll go for a few hours. She left at 5.30 pm. She gave a cold good bye and left. 

I’ve just woken up, she’s not here, Its now 3.45am and I’ve text her to check to see if she’s ok. She’s text back and said she’s sorry, she’s had a load of whisky and is dancing in the kitchen atm!!!!! Wtf

She gets the worst hangovers. So, that means tomorrow she isn’t going to be any good until my kids are going back to there mums. I won’t be able to leave the flat with 3 of them. 

Before going out she did offer to take her daughter to her mums tonight. But I said no as it didn’t seem right not all being together as a family. 

So because of the PMS and this night out, my whole weekend with my kids, time for us as a family has been ruined, we’ve done nothing together. I feel like a single dad sometimes. ☹️

(She’s still out BTW)

AITA?? I know I’ve put this from my prospective so please ask questions. 