Cerebral palsy sufferer Lisa Munden and partner Brett Fage live in a two bedroom house in Essex.
They face paying more from housing benefit changes because, as a couple, they are expected to share a room.
The couple have applied for the extra money available to local authorities to help people with disabilities.
Speaking to Daybreak, Lisa said: "Because we are a couple it doesn't mean to say we sleep in the same room."
She added, "if you go in my bedroom now, it's full of pillows because when I go to bed I have to have pillows to hold me in that position, so even though it's a double bed, by the time he's put the pillows in, there isn't any room for him."
More top news
Christian Hickey, seven, was shot on the doorstep of his home, now he is asking Santa to help police catch the people who hurt him.
A man accused of stabbing his father to death during a row over food has been arrested by police.
The UK's biggest ambulance service is to become the first in the country to be placed in special measures.