Posting a tribute to his lady, the actor revealed four separate pictures of the duo making out on Friday.
In the snaps, Cole and Lili look crazy in love and show they're not afraid of a little PDA.
"Lil @lilireinhart was born on a Friday the 13th and haven’t I just been so lucky ever since?" he wrote on Lili's tribute post.
The pics are adorable and show just how into each other they actually are, despite breakup rumors that circulated between the duo a few months ago.
It was reported that the "Riverdale" duo "broke up earlier this summer" and were "not living together this season" while they film season 4 of the hit show.
The breakup rumors continued when their W Magazine cover was released and the reporter said the pair asked to be interviewed separately.
But Lili put those rumors to bed when she celebrated Cole's 27th birthday with a sappy tribute.
Reinhart took to Instagram in August to post a suave photo of Jughead, along with a heart-melting love poem.
"I tried to find a poem that I could send to you. Because my words were failing me. But I searched and found nothing that did you justice. All of these love poems can’t get it right," she wrote.
"No one else’s words could ever fit. They haven’t known the fortune it is to love you. -sappy nighttime birthday poem for @colesprouse," Lili concluded.
Lili has a big birthday weekend -- her "Hustlers" movie starring J Lo hits theaters today!