This is the original Irresistible I will be writing a new one, with more detail, etc. If you'd like to read both you can.

Luna is growing lonely. The only pony to talk to really, is Celestia. But she was always busy and Luna didn't want to bother her. She wanted somepony to talk to. A best friend.

Fluttershy, Rainbow Dash, Twilight Sparkle, Applejack, Rarity, and Pinkie Pie are long-been best friends now, and they have conquered the magic of friendship. Yet they don't have any knowledge of the magic of the element love. Unexpectedly, all six ponies somehow find love in Ponyville and are forced to pay the consequences and confusion that go along with it.