I suppose I should have narrowed down my comment.
Yes, the thing which we call 'love' is largely sentimentality and emotion, but it can be many things, the desire to possess, the desire to power ... we can love anything from everything, to nothing, from the banal to the sublime.
And yes ... the human can be controlled. I believe the will to live is such that one cannot be hypnotised to put a bullet through one's head, but I might be wrong.
So as were in religion/faith/theology and belief/spirituality, perhaps I can be allowed to refine my comment.
Love as spoken of in Christianity, is not the same thing as society generally determines it to be.