Superboy and Miss. Martian should not be brought back together, I know Miss. Martian apologized for her psychic-powers abuse, but really? That's no excuse for what she did to Superboy and if the genders were reversed the relationship would still be unhealthy and in other ways creepy. IMO they should move on from their old flames.
By season two Miss Martian becomes a broken character on multiple levels. For starters she has become far too powerful, becoming the only sidekick to become far stronger than her mentor. Her telepathy is for some reason stronger than pure telepaths.
And no one calls her out on putting villains into comas except Superboy.