Is It the Real Thing?
There's a thin line between a romantic statement like "I love you so much, I want to share my life with you until death do us part" and the lunatic-fringe anthem "I love you so much that if you try to leave me, I'll kill you." People who say such things love others the way spiders love flies; they love to capture them, wrap them in immobilizing fetters, and drain nourishment out of them at peckish moments. This is not the kind of love you want.
The way you can tell real love from spider love is simple: Possessiveness and exploitation involve controlling the loved one, whereas true love is based on setting the beloved free to make his or her own choices.