Relationships are built with various kinds of bonds like love, responsibility, sensuality, various emotions, and feelings. And there are chances that some of the bonds can be broken even though two people remain in a committed relationship. Some people stay together without love to portray themselves stronger to the outside world for various personal and professional uses in their life. Similarly, some people stay in a relationship because of their offsprings. A few people live in the same house but lead different lives in two different rooms as a separated couple but still look happy and give fake couple goals to others just not to demotivate people around.
Relationships become complicated only if and when one of the bonds is broken. And hardly people realize and recognize that broken bond. Before repairing or trying to patch that bond, a couple may reach the extremes and may fall out of their relationship. So before that, every person must know how to realize the cold atmospheric behavior of one's partner especially when the romantic bond is about to break.
Priorities may change! A person once who used to leave everything aside to just meet you for five minutes may become a person who hardly gives you five minutes a day. This drastic change in a person's behavior must be noticed and should be handled soon. Talk to your partner and sort out the real problem before it becomes a huge threat to your relationship!