I had noticed the dog was bonding more with me, which was a good thing because his recall improved enormously and i was finally able to let him off lead....but its gone too far. He groans and whines if I leave him with dh and the kids but he eventually settles.
On saturday we left him with family, he's previously stayed in their house with us at least 6 times so we thought he'd be ok, maybe he'd moan a bit but eventually settle but he cried all day! They walked him loads, played with him constantly but he would suddenly remember he'd been left and start moaning again.
We're doing a citibreak in Europe this week for 4 days, I'm leaving him in home boarding but i dread to think how he and the woman who is looking after him is going to cope. 
I had no idea how bad he has become, I often leave him at home for a couple of hours and he always seems very relaxed on my return. I'm really regretting booking the holiday now.