Bank Innovation reported on why PayPal isn’t an Apple Pay preferred partner.

But while these talks were going on, PayPal went ahead and partnered with Samsung on the Galaxy S5 fingerprint scanner, a move that was reportedly forced onto PayPal by eBay CEO John Donahoe. PayPal’s now-former president David Marcus was purportedly categorically against the Samsung deal, knowing that it would jeopardize PayPal’s relationship with Apple. Donahoe won the day, however.

Apple was said to be absolutely furious that PayPal did the deal with Samsung, which led Apple to cut PayPal out of the Apple Pay process entirely. (One source said: “Apple kicked them out of the door.”) This dust up with Apple was a big reason that David Marcus ended up leaving PayPal for Facebook.

Huge loss for PayPal.