Now I'm really curious if anyone can find the last time Rogue actually told Gambit that she loved him in a 'main' book. I started flipping through some of the older issues of MMX out of curiosity, but so far nothing.

I'd be willing to bet it was X-Treme X-Men, back in '01. I can't remember anything like that from Milligan or Carey's runs, but I could be wrong.