Falling out of love or just comfortable?

My fiance and I barely ever have sex, we are distant a lot. I feel as though our almost 11month old son is all that's keeping us together.

He says (in front of our friends too mind you) that I am boring and only want two positions.

He belittles me and calls me lazy too.

We both work full time jobs but I am the one who takes the baby to daycare and picks him up, also the one who gets his food 99% of the time, feeds him 99% of the time, bathes him 100% of the time...ect.

Idk what to do.

EDIT:

been together since March 2010.

Sometimes he will have sex if I try to initiate it. A lot of times he will say he's tired.

Edit#2: still haven't talked to him. I'm scared to get kicked out and be homeless