I'm not entirely sure but just a wild guess, in hopes that gives u some kind of direction; I think it means that he/she will be expecting you to be there when they can't be there for them selves meaning, reasoning them out from drinking should they fail to do so them selves, or it could be keeping them away from it all together in the first place.... Things like that I suppose. To be the version of them that wants to stop when the one inside them fails to exisist.