I've been with DP for 3 years. We moved in together 2 months ago and he has been pretty much avoiding me since 
At the moment we are having some building work done to our house so we've only got two bedrooms and one of my DC's in in with us and the other DC's are within earshot as their bedroom is open IYWIM (no doors). So we get one night a week child free, this is the only night we get to DTD.
Friday night DP slept on the sofa 'so I wouldn't wake you with my snoring' apparently so slept until gone 2pm yesterday, I'd taken my DC's out by that point.
I came home at 7pm with lovely food and beer cos DP didn't want to go out. Had a lovely evening. By 1am I was shattered and said I'm off to bed, please come with me and DP said 'I'll be 20 mins just finishing my drink.' Still hasn't come up at 3.45am 
So our child free time has gone as I'm off out to pick up DS1 for footy and he's coming back here.
This has been a regular thing. He won't come to bed at the same time and then sleeps most of the following day. It seems like he's actively avoiding me and being intimate with me and tbh I'm getting really fucked off with it!