Jason Bard and Terry Long.
I don't know. It would just... work.
Personal favourite: Connor Hawke and Jackson Hyde
Amanda Waller and King Faraday (Always been curious)
Damian Wayne and Emiko Queen (Haven't read the recent Titan books so wouldn't know if anything happened when they were on the same team)
Zan from the Wonder Twins and Ice from J.L.I. (is she a teen now? I can't keep up)