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.
FWB. see 'friends with benefits'. casual relationship implying no committment, but involving companionship (the friends bit) and some sort of physical element like making out, sex, baseball (the benefits). although rumored to be a myth, absolutely possible.