There is one such couple in a group always, who keep exchanging annoying statements in the form of tweets and status messages with others on the social media. They really don't bother much about their act of spamming others' timelines due to their mushy conversations.
In case someone has reached a milestone in your relationship or enjoyed a best vacation with their partner, well does the world really care about them? Sharing several pictures of their one-month anniversary celebrations will not be making a difference to anybody's life but they want to tell the world how amazing is their relationship giving them a boost.
Someone may be going through a rough patch in their relationship but they take to this to a quarrelling level on social media platforms. Well couples could rather use personal chat rooms and e-mail for this purpose!
You may have a fight just now with your guy, but rather than ironing out the matter and speaking about it, you may use social media as a platform to engage in sly tweets about your partner. The world need not know that your private life is a mess!