Oh, honey. My dp has been a bit weird not about b/fing but expressing, which I've done since going back to work when dd2 was five months old - he's been convinced it's exhausting me, running down my supplies (er??? I should point out I am Missis Moocow, the dame who once posted on MN that she'd got out nearly a pint that day etc - and he's now quietly pushing the idea that I should give up sometime soon (admittedly dd2 is nearly a year old, but it all seems to be going so well) because, he says, he worries that I'll lose calcium. He's a total darling, and a brilliant hands-on dad, but bizarre about breastfeeding.
Oh, and there's loads on MN about expressing (much of it prompted by me in panicky moments!).