Throuple dating is another modern concept that people are gradually turning to. Rather than increasing tendency among partners to cheat in a relationship, they rather resort to accepting the third person in a couple's living. Couples resort to bring in an extra man or a woman in their life. Here are some of the reasons of this changing paradigms of relationship. Threesome relationships have somewhat managed to rule out the possibility of infidelity among conventional relationships. Couples are more understanding and communicative of their interests. When you have accepted the third person in your relationship, it is unlikely that your partner might look for other people out of your knowledge.