Rogue & Gambit
Creators: Chris Claremont, Michael Golden, Jim Lee, Mike Collins
First Appearance: Uncanny X-Men (Gambit) #266, Avengers Annual #10 (Rogue)
Marvel has several storied romances, Jean Grey and Scott Summers, Storm and Black Panther, Mr. Fantastic and the Invisible and Mary Jane and Peter Parker. The romance that I was my favorite was Rogue (Anna Marie) and Gambit (Remy LeBeau). I was first introduced to them during the X-Men animated series. In the comics they first met while Rogue and gambit were under the control of the Shadow King on Muir Island. Their relationship was often strained due to Gambits lying and Rogues inability to touch due to her absorption powers.
This of course meant that they could never have a completely physical relationship, but flirting was an option. They both seem to at least enjoy this aspect of their relationship even if it was limiting. Eventually, they would both lose their powers allowing them to explore their relationship more. However, evetually Rogues powers return and even when trying to have sex telepathically her powers still absorbs Gambit. A new student, Foxx (Mystique in disguise) tries to use this moment to break them up. She even offers to sleep with him as Rogue, since that somehow wouldn’t be cheating. She fails, but succeed in furthering the rift between them.
Later under the influence of Apocalypse and now the horsemen Death, Gambit would attempt to kill Rogue. With the help of Xavier, Rogue learned to control her powers. However, considering the past events she was hesitant to continue their relationship. Later, at the failed wedding of Kitty Pryde and Colossus and some encouragement from Storm, Gambit proposed to Rogue. They were married shortly after. Rogue and Gambit had a lot of problems that could have ended their relationship. Despite them the managed to stay together and I always found their flirting in the animated series to be fun to watch.