Op this is horrible, how dare he?
So presumably since you're too fat for him to have sex with he doesn't ask you? Make you feel special etc? Oh. My. God.
I am much bigger than you and my dp fancies me just as much as ever, probably more now to be honest.
This is a really shitty thing to say. Honesty? Does he want a bloody medal? There's honesty and there's nasty.
Nobody can tell you what to do, if this is out of character for your husband then you need to give him what for. If you look back and see that he's been like this for a while then it's time to move on, without the excess baggage that is him.
I would play him at his own game and point out every single fault of his ( and make up a few for good measure )
You deserve to be cherished. The one person who should always have your back is your spouse. I'm fuming for you.
Go on the holiday and wear what you want. Let him know that you've got no problem with how you look.
One of my best friends weighs half of what I do, literally. She eats and eats and remains a size 8, she has no figure or boobs and hates it. She always says she would love to have my figure with all its wobbly bits.
Shame on him. Don't change for this man.