May 17 (UPI) -- Machine Gun Kelly voiced love for his fiancée, Megan Fox, while celebrating her 36th birthday.
The 32-year-old rapper and actor, born Colson Baker, marked the occasion Monday with a tribute to Fox on Instagram.
Kelly shared a slideshow of photos of himself with Fox, including a picture of their matching voodoo doll-inspired tattoos on the ring finger of their left hands.
"wishing the happiest birthday to my ethereal light being. i love you maki," he captioned the post.
Kelly and Fox attended the Billboard Music Awards on Sunday, where Kelly performed his song "Twin Flame." Kelly dedicated the performance to his "wife" and "unborn child," fueling speculation he and Fox are married and expecting their first child together.
Fox addressed Kelly's performance in an Instagram post Tuesday and said she was headed into the "wilderness" for her birthday.
"Baby- so proud of you for giving such a vulnerable and emotional performance. You are magic," the actress wrote.
"Also Vegas it's been nice but you are my version of the innermost ring of hell," she said. "Off to the wilderness for my birthday. No one talk me for a week."
Kelly and Fox confirmed their romance in June 2020 following Fox's split from her husband, actor Brian Austin Green. Kelly and Fox got engaged in January.
Fox has three sons, Noah, 9, Bodhi, 8, and Journey, 5, with Green, while Kelly has a daughter, Casie, 12, with Emma Cannon.