I´ve thought about this for a long time. I would prefer the TOS Universe, but maybe it´s also possible in Abrams universe.
Spock is traumatized from an incident in his childhood (Maybe Rape or somthing other, it´s up to you). Something happened let him remembere and he can´t sleep or meditate, because of terrible nightmares. Jim tries to comfort him.
At last they discover their feelings for each other and spend hot and romantic nights together.
Bonuspoint: Spock didn´t tell Jim at the first time.
Bonuspoint: McCoy is involved in the story and knowing about Spock´s trauma (Spock told him).
Categories: Fiction Characters: Original Character(s)