We've lived together for a few years, not married, and this is something he does every so often.
He won't tell me he's going out, I'll just get home from work and he won't be there.
This afternoon whilst at work, I asked him if he was available tonight. He said, yes I am, want to go out? I said yes that would be nice, I'm a bit skint but would like to (even if it's just having a night in together).
I texted him when I was on the train home, no reply.
Got back an hour ago and he's gone out. I texted asking where he'd gone and no answer. I know he'll be out drinking with friends and no idea what time he'll be in.
I just find it so rude when you're living with someone to go out and not even say you're going or anything, I'd never do that to him. As I say it isn't the first time.