I'm in the same situation. The only Fairy TM I know is TM99 Dazzling Gleam, given out by the 6th Gym Leader. Other than that, Gardevoir has to learn Moonblast (seen her use it), but I don't know how or when. =/
If life gives you lemons, sell 'em to Tom Nook. Black 2 FC: 0132-9980-0476 (Aki), 3DS FC: 5284-2520-2972
thats disappointing.. i was honestly expecting it to learn at least draining kiss.. maybe it learns some fairy moves via breeding? doesn't help too much in my case as then it wouldn't be able to know both trick and another fairy move but oh well.