I had a similar experience recently with my family- that is my dad, mom, grandfather and siblings. Doing _everything_ together is a socially exhausting experien

I had a similar experience recently with my family- that is my dad, mom, grandfather and siblings. Doing _everything_ together is a socially exhausting experience. The way I coped with it was to find some bits of spare time to go do my own thing. For me this was something mundane- I wanted to find a popular ruin bar in the area, but in the process I found a backpack I really liked and later purchased. This might be a more complicated situation given it's your girlfriend but taking a bit of time to solo it helped me a lot.