Apple's online stores in the US and the UK have added PayPal as a payment option. Previously, PayPal transactions were only available in the iTunes Music Store, App Store, and iBookstore. As can be seen in the screenshot below, the option will appear alongside the usual credit card payment methods.

An important point worth mentioning here is that the feature, which was first spotted by Re/Code, isn't yet available in the Apple Store iOS app, and it isn't clear when, and if, it will be added.

In addition to the new payment option, the Cupertino-based company is also promoting PayPal Credit, allowing you to pay for items over $250 in equal monthly installments over the course of 18 months with no interest.

The move is particularly interesting given that both companies share a complicated relationship. Back in September, after Apple announced Apple Pay, PayPal took a jab at the tech giant's security practices by cleverly referring to the iCloud celebrity photo leak in an anti-Apple Pay ad campaign.

Earlier this year, there were reports of Apple and PayPal coming together for Apple Pay, but the deal reportedly turned sour after the latter entered into an agreement with Apple's rival Samsung to let users make payments with the Galaxy S5's fingerprint sensor.