It means it's past time for you to ditch this loser and move on.
If you break up, you need to break up: that is, move on completely. There are plenty of people who will cling to a relationship after its ended: I know of a person who stayed on for more than a decade before it ended in a spectacularly ugly fashion.
If he wants the sex without the commitment or doing anything nice for you, he can go to a bar and find it there like everybody else. Throw him out of your bedroom and your life, you'll be better for it.
It means that he can care less about your feelings…
It means he is sleeping with you because you are letting him!
And let's not forget that it's also just convenient for him until he finds some new chick to sleep with.
It means he cares enough to continue providing you with good sex even after the relationship has ended. Be thankful he finds you attractive enough to do this service.