Fear in a relationship often oppresses both people within it. It is more likely to drive people apart then together. Love is a gift. A gift is only a gift if it is freely received. We need to remember that there is enough love for everyone.
polyamory
10 Things Monogamy can Learn from Polyamory- Part I
You cannot force someone to love and care for you, or to stay in the relationship, you can only tell them what you need and ask for what you want.