perpetual bliss

There's always That Couple -- you know, the ones showering each other in PDAs and glowing with every utterance of "you complete me."

You hold back your vomit by telling yourself that they must be really unhappy behind closed doors.

Well, you might be wrong.

Ten percent of couples really do feel that initial rush of love permanently, these researchers say.

Don't worry, though. Even if your coupled friends fall into that category, you're still more than welcome to make up jealous rumors about their relationship.

In fact, I'd encourage it.