Moms and Dads ano kaya ang mga reason kung bakit sa isang relasyon may nanlalamig ?

To add to Eds and Mark's comments, I would say lack of communication or miscommunication. In our case, hindi lack of time ang problema kasi araw-araw kami magkasama pero we don't get to communicate well. Minsan pagkasal na kayo, dun nyo lang nadidiscover ang differences nyo and sometimes it's really difficult to deal with.