Eat Me - Literal Meaning

In Eat Me, a woman is fed up by her male partner until she is obese. At some points, it seems she enjoys food and at others, it seems she is being force-fed. At one point, she becomes so fat that when she rolls on top of him to engage in intercourse, she suffocates him and he dies. The ending is rather ambiguous as she tells us that there was "nothing left in the house to eat" implying that she either starved or ate her partner