It's really getting my DH down. He never wants to be around anyone but me. On weekends, we will all be together, and it's only me he will come up to, to show me stuff that he probably shouldn't be touching 
He can be playing happily with DH, and runs for me if I leave the room. He will not be settled by DH. DS sleeps through but often wakes in the evening. He is distraught it his dad comes in and not me. So much so that he throws himself backwards and lashes out.
If DH picks him up for a cuddle and I'm sitting next to him, he cries "Mummy! Oh mama! 
" and fights to get away from DH.
DS really loves other children but won't be cuddled by anyone but me, who he snuggles and kisses, etc etc. He's extremely selective with affection. This upsets MIL and my own Mum makes a joke of it, but I see she's hurt too.
I don't mind too much but at times it's incredibly draining. Does anyone know how I can improve things?
He's 15 months nearly, he's been this way since birth (I know it's completely normal at birth since I was all he's known).
I've tried to emphasis with other mums but everyone I know with a baby of similar age says something like "Oh no, mine adores their dad/my DH 
"
Thank you 