The pair did battle as Spain defeat Norway 2-1, with King scoring from the penalty spot.
"It was fun to play against him. I think I managed quite well against one of the world's best stoppers," King told VG.
"I actually thought Ramos was something else ... he's known to be ugly and dirty, but I can't remember the last time I played against such a friendly stopper. We talked a lot during the fight and stuff.
"(But) You don't get everything. You don't get all the info! It was just just friendly.
"He was a good sportsman."