+J a c k+
I agree. It's just a form of Manipulation. I wouldn't do it to a loved one though.
I don't think it's possible to do it to a loved one.
If they are a loved one, you give them your love.
Those types of relationships are always give and take.
While you can use the same form,
it cannot be constant or they are not a loved one.
On another note, you could reverse the vampire's technique on to them.
Perhaps change their ways and save others from being prey.