I'm not saying you should try it out or like it, but who are you to decide how other people love? Your idea of love/relationships are not the standard or norm.
It's not necessarily the case that poly people in relationships don't get jealous. Like with any relationship, it requires growth and understanding. However, the fundamental idea behind sustainable polyamory is there is no such thing as ownership of another person. For some practitioners of polyamory, though, it could be that they just feel bonded to different people because each person has a multi-faceted personality and more than one individual, then, is theoretically able to compliment it. I hope that my explanation made sense and shed some light on this subject for you. Feel free to ask questions, if you have any. ^-^
I think that ownership idea or possessiveness is a problem not only in poly relationships, but in every type of relationship. It can lead to expectations like "since I love my partner, they have to love me back the same", "since I show them so much affection, they have to appreciate it", or any other expectations regarding their behavior solely based on the fact that you're now in love with them. You don't need to be a genius to see that this just leads to disappointment.
But I admit, not being selfish in love, not expecting anything in return is pretty hard.
I feel like it's not 'love' per say (well I shouldn't say that, but I feel like it's a different type of 'love' rather than mono relationship) but more of a way to strengthen bonds. After all the ancient Greeks and Romans did it all the time, especially when they went to war (learned that from my history teacher) ;)
i like threesome sex but I hate it when it comes to love or relationships . like what the fuck is loving two guys at the same time what the heck is that it's so weird they talk like a one person but have two personalities . If someone really loves you he will never want to share you with someone else . I hope this story will stay in the sex friends point or I'll throw up