If you want that your beloved should not talk or even look at others, it will harm yourself.
We all love freedom. Should not you allow it to your partner? Jealousy is the worst malady, affecting healthy marriage.
I remember a lady doctor, extremely beautiful, who was asked to resign her job, by her husband, a railway engineer.
In one novel, the husband, a parson posted with an army unit during war, imagines his wife enjoying with the neighbor. Poor guy!
Possessive love may be between father/mother and son/daughter, or even for your car!
We may not relish if our friends live in our house, lying vacant, or give it on hire.
It is easy to say it; but like ego, it is part of human nature.
Love and marriage must help each other, encourage one another. Learn it slowly.