The Little Mix musician took to Instagram to post their photograph kissing each other with the Eiffel Tower adding the romantic feel to the background.
She captioned the picture as, "Him".
Perrie and Alex, both 23, first sparked the news of their link-up in last November.
But the couple has managed to stay out of spotlight till now.
Perrie was in a relationship with former One Direction star Zayn Malik but they parted ways in 2015.