What does jovial naivete' mean together?

Cheerful;friendly

It means kind of happy or jollyThe word originates from Jove (Jupiter) which in mediaeval times was associated with happiness.

Usually when talking about people, the term being "together" with someone means they're dating, boyfriend/girlfriend. That type of thing.

keep it together means stay put, don't lose it, hum, don't get sad or be negative, stay focused, be you, be positive. hope I helped :)

To converge, join together as one like two branches of a river; to merge, as with various factions joining as one. In sexual slang, it refers to both parties reaching sexual climaxes simultaneously.