"How is it possible for one to love two (or more) people at the same time?". That's may be some people thought about polygamy. They doubt about the issue of polygamy in Islam. They believe the idea that God created one mate for each person, just as Adam had his Eve, and believe of true love or loyalty and love for one person.
"How can a husband love more than one wife while his heart has (or should have) room for only one?", some people claim of that. In fact, this claim may not be true, because when a parent, for example, has more than one child, does he or she love only the first child? The answer is "no." Parents do in fact love all of their children; so, such a parent does love the second child just as he or she loves the first one. Yes, a parent may love one of his or her children more than the others, but ultimately, this parent will always have a place in the heart for every one of his or her children.