“Lil @lilireinhart was born on a Friday the 13th and havent I just been so lucky ever since?” he wrote alongside photo booth pictures of the couple kissing.
Earlier this summer, rumors of the “Riverdale” couple’s split surfaced after they were spotted avoiding each other at San Diego Comic-Con. Us Weekly reported at the time that Sprouse, 27, was overheard confirming their breakup.
A reporter for W magazine, who wrote a cover story about the couple, revealed he’d done their interviews separately.
However, Sprouse and Reinhart have been laughing off the rumors ever since.
On his birthday, Reinhart posted a love poem to the actor. And one day later, Sprouse told ET, “I think you have to poke fun [at] it a little bit. Its kind of something you sign up for, but as long as can keep it light and fun, its all good.”
The pair play on-screen couple Betty and Jughead on “Riverdale.”