The cause of breakup this one is a small things but very influential!
source
" Lack Of Communication "
Sometimes lack of communication can also be the cause of breakup, why? because by communicating we can share with each other, and if we rarely communicate then there is no more things to share, and we will not know how he's condition, what he's doing now and all about him. Lack of communication with the couple indicates there is no sense of caring or ignorance.
Communication is very good for a relationship, because you can know how the condition even the problems that are facing, and of course can help each other solve their problems. Therefore to maintain a relationships, you can just maintain communication, because communication indicates you care about your lover, and that is enough to make your relationship better.
If you lack of communication, it would result in losses for a relationship, because if you do not communicate with your lover, maybe something bad will happen. If you do not communicate, you deliberately show how you don't care about him, which causes him to stay away, and maybe he will look for someone new who cares more about him. And if he's been with someone else, you'll blame him for cheating, but it's not his fault, but it's your own fault that doesn't care to him.
In a relationship there must be a strong sense of care to make the relationship more pronounced, romantic and right to be called a relationship, if there is no caring, it's same as you dealing with an ordinary friend, not with your lover that you think he's special, if your partner is special, if your lover is special, you must treat it differently, because the special is definitely better, different and more than the others because it is special.
Even though the communication is a small thing, but it can cause big problems.
