Olivia Rodrigo celebrates "angel boy" Louis Partridge's birthday with sweet message!

Los Angeles, California - Olivia Rodrigo honored her rumored boyfriend, Louis Partridge, with a swoon-worthy message in celebration of his 21st birthday!

Olivia Rodrigo (r.) left a swoon-worthy comment on Louis Partridge's latest post in honor of his 21st birthday.
Olivia Rodrigo (r.) left a swoon-worthy comment on Louis Partridge's latest post in honor of his 21st birthday.  © Collage: IMAGO / NurPhoto & Monica Schipper / GETTY IMAGES NORTH AMERICA / Getty Images via AFP

The Enola Holmes actor commemorated his big day with a throwback snap shared to Instagram on Monday, quickly earning some sweet praise from Olivia.

"welcome the 21 club angel boy!!!!" the singer wrote, adding on a few heart emojis as well.

Though the two have kept their romance relatively private, it doesn't seem to be much of a secret anymore!

Kylie Jenner floods her Instagram with Venice vacay posts!
Kylie Jenner Kylie Jenner floods her Instagram with Venice vacay posts!

Louis was the first to address it directly while dishing on dating in the public eye earlier this year, sharing that he finds the pressure on her to be much "worse" than it is on him.

During her latest tour stops in the UK, Olivia has been paying homage to Louis with performances of so american – a GUTS (spilled) deluxe track that is not-so-subtlely inspired by the Brit, who has been in attendance at a number of shows on the tour so far.

Prior to sparking dating rumors with Louis last October, the get him back! artist was previously linked to DJ Zack Bia, producer Adam Faze, and her High School Musical: The Musical: The Series co-star Joshua Bassett.

Cover photo: Collage: IMAGO / NurPhoto & Monica Schipper / GETTY IMAGES NORTH AMERICA / Getty Images via AFP

More on Olivia Rodrigo: