Maybe this is too vague, though thank you ksst for answering at such length :-)
Can I try in another way?
I wonder what people think about the following:
I love him/her and I cannot live without him.
Does one follow from another? Is it a sign of love that you cannot live without the loved person?
We love each other and we belong to each other.
Does loving mean that you belong together, and does belonging together mean some sort of mutual ownership?
If not, how can we explain the feelings of betrayal often connected to someone whose partner has fallen out of love with them? Historical? Religious?
Eternal love
Does true love mean that you love each other all your life?
Love turned to hate.
Is it really possible that love can turn to hate, in some circumstances? How does that happen?
Loving someone means you are more interested in their well being than in your own.
Is this true?
If yes, how do we explain the myriad of expectations we usually have to each other when we form a relationship?
Loving someone means you are as interested in their well being as in your own.
Is this closer to the mark?
How do we combine love with expecting the loved one to follow your own needs?
Does love conquer all?
Meaning: if you love each other, you can solve all problems?