The pair are currently on vay-cay in the Bahamas, and a fan managed to capture a video of them packing on the PDA while out and about.
Just take a looksie:
We're not sure about you, but this is probably the best celebrity couple of all time.
Niall can be seen with his arm around Hailee in the video, also leaning in to kiss her at one point.
The pair basically confirmed their relationship before heading on the vacation, when they attended the 2018 Masters Tournament together and stayed in the same house for the 4 day event, according to Mail on Sunday.