Love doesn't last forever. You can fall in love with someone with just one look or action. Therefore, it is normal for a person to like several people. They are destined to be together, but they are destined to be together, and they may not be able to be together with whomever they like.
Morality restricts you to only choose one, a very painful choice. Because you cannot withstand the condemnation of conscience and the constraints of morality, you can only suffer, and the result is regret. Because you cannot have everything, love will no longer be complete. Love that lasts is just a product of civilization and beautiful yearning. Marriage cannot restrain love, and morality cannot restrain love. The only thing that can restrain love is reason. When reason defeats emotion, you have restrained love.
Polygamy and polyandry are not unacceptable, as long as you are willing, but many such models have other impurities besides love.
If you have a choice, please exit wisely before your feelings overcome your reason, and go find the perfect other half created by God for you. That is the truly perfect love!
Conception: