Grapefruit enzymes reduce the amount of insulin that the body makes which helps the metabolism stay regulated. A well-regulated metabolism helps you to lose weight faster and more effectively. Scientists do acknowledge that grapefruit has properties that balance out blood sugar levels and help the metabolism.
It's possible your Facebook woes are coming from some sort of malware, be it a keylogger, a trojan, or some other type of virus. Even if you think your computer is clean, it can't hurt to check.
On 24 June 2016 a Facebook user published a photograph along with a claim that an earlier post of hers involving photographs of an infestation of bedbugs, taken at an unspecified location of the Great Wolf Lodge chain of indoor water parks with hotels, had been removed from Facebook: