I hear several conversations on modern day relationships and how marriages are morally weak these days. I believe a lot of work need to be put into any relationship, but being and thinking differently don't make anyone any less scrupulous either. In my opinion, it all started way back in the Treta yuga. Laksman and Urmila from Ramayana are the embodiment of a modern day perfect "no strings attached" relationship. I think Laxman married Urmila because that was the most convenient alliance for him owing to his desire to serve Ram and Sita always. Who better than Sita'a own sister? Since Laxman was definitely a better brother than a husband, the relationship must have taken its toll on the couple gradually. Laxman's Vanavasa was probably the much desired break they both had from eachother. Why else would Laxman ask his wife to stay back to take care of his parents. Like the king and the queen didn't have enough help around the kingdom. Urmila never insisted on accompanying Laxman either. She instead advised him not to worry about her and he conveniently didn't. No matter what reasons we give to explain this, if Sita could accompany Rama, so could have Urmila. But the couple made a choice not to and the only cogent reasoning is that they wanted time away from eachother. I believe the same is the reason why there isn't much mention of Urmila in the Ramayana, because she probably digressed from the classic, flawless wife model. Laxman isn't the ideal husband either, but who really cares, he is the "Man"!!!