Looking after those you care about without looking for reward is the mark of a true friend. Accepting that we are responsible for actions is the part of growing up too.
I, along with others, am caring for my elderly mum in law at the moment - she is lovely , but her hubbie, who she adores, is not easy to get along with. If we are looking for anything else other than friendship it is akin to a a contract.
We all know that what the wts is about control, which is why we have gratefully moved on.
Regards David