If your happiness depends on someone else’s life’s events, actions n reactions AND what they write or do on social media, you are really fooling yourself. People do and say anything to get others engaged with their profiles. You be thinking that they have put their whole life n reality on social media accounts, whereas the reality may be completely the opposite as well as something that you can never apprehend.
Also, if you are happy just because someone else wrote something negative and/or some sad words, trust me, nobody is more pathetic and narcissistic than you, because it means that you love to suck others’ good energy and find pleasure in their bad/low times. Even if it satisfies you for a short-term, for the long run, you won’t get anything good and substancial in life, and you are actually and inherently a very miserable person.