Facebook exhibitionist
Someone who posts their love on their partner's wall like it's a public announcement, even though everyone can see it. They're either trying to show off or make everyone else feel like failures.
'I’m so in love with her, I could eat her!', posted on his girlfriend’s wall during dinner.
'He’s the best man I’ve ever had!', said by his boyfriend on Facebook during a party.
'They’re the best couple ever, and I’m just here to watch them fail.', said by a friend who's definitely bitter.