I have NC for this.
Partner and I live separately. It's been a rocky couple of years for one reason and another so recently we decided to slow things down a bit and concentrate on making each other feel secure.
Yesterday he rings and mentions that he's going out with 'the boys, for a bit'. Says it won't be late, we can chat later, etc. My prediction is late and drunk. He refutes this, especially the drunk bit. I don't mind either way.
I go to bed early and text goodnight. He replies.
I wake to a text message sent at 5am. I reply saying late night then?!
When we speak, it turns out that after staying out all night, a whole load of them went back to his place for an impromptu party (absolutely unheard of before, he doesn't particularly like people round). Gallons of alcohol consumed, everyone falling asleep all over the place, including three random girls. WTAF?!? At this point I virtually hung up. His defence consisted entirely of "no-one slept in my bed but me" (again WTF???!!!) and "I didn't do anything wrong" - which I don't doubt. However to me having random, drunk girls sleeping in your house when you have a GF is not on. Or maybe it would be if it was planned and I knew about it - but seriously - when things are as they are I cannot understand how he thought it OK for this to happen. What if they had tried something on? Would he have allowed them to sleep in his bed if they had wanted to? I already feel excluded from his life where he lives and the fact that he can be doing this on any given night of the week does NOT help that.
I am really upset and angry and hurt - but if I'm being an unreasonable cow then please don't hold back dear mumsnetters!