I'm not really aware of any Gambit fans that outright 'hate' Rogue, though there are a few that certainly dislike her because a large majority of the time she tends to overshadow Gambit. We might hopefully get a balance now, with each of them getting a chance to shine alternatively, but of course we'll have to wait and see. At least at this point in time we won't have to deal with any more wishy-washy Rogue and pining Gambit.
Likely just angst from their own individual friends, family, and previous dalliances.
Part of the Rogue 'overshadowing' Gambit issue has to do with how they are as characters, too. Rogue has both a strong personality and a strong power-set. Some would say a ridiculously strong power set. A power set that seems to be shifted in some way every few years.
Gambit has a strong personality too (at least 90's Gambit did, and we've only really recently seen bits of its return) but his power-set has been rather stagnant since his first mini and solo run where there was lots of creativity. Asmus hit the reset button on his powers at the end of his latest solo, but no one picked up on that since, which has been pretty disappointing. It's been punch, kick, swing staff, throw card, repeat ad nauseam.
Fingers crossed that KT can show that spark of creativity with his powers for the first time in a decade.
EDIT: Actually something that would be really interesting, have something manipulate Gambit while in space, causing his powers to spike again, bringing back some references to New Sun. Neo Sun, if you will. :p Don't go that way, obviously, but it's a good way to get those two invested in the greater Marvel-verse at large if others will have to come to help them, and it would be interesting for Gambit to be the one with the power problems again.