Coronation Street actress Michelle started her day by telling Mark: "Happy birthday to my fiancé and bestfriend @MarkWright_ Thank you for constantly making me smile. Love you lots."
Mark then replied: "Thankyou darling. @michkeegan you made this weekend the best birthday ever. Such a special person. Love you so much x."
Their cute messages came just a few days after Michelle organised a surprise party for her man in Manchester, which saw guests turn up sporting cardboard masks with Mark's face on them!
Afterwards, Mark tweeted: "Never had a surprise bday party in my life !! Tonight my amazing fiancé @michkeegan made that happen. She's the one !! Diamond !! I love her."
The couple confirmed their engagement in September, after Mark popped the question during a romantic holiday to Dubai. It's a place that holds a special place in their hearts as it's where their romance began the previous year after bumping into each other on a night out.
Michelle, however, wasn't the only person sending well wishes to Mark today: the reality star and model was inundated with messages from his former TOWIE co-stars, his family and his celebrity friends.
Our favourite message came from his dad, Big Mark, who uploaded a photo of a baby Mark alongside the caption: "27 years ago today this fellow popped out and has been giving me headaches ever since. Happy birthday @MarkWright_ x."
Mark replied: "hahahaha thanks dad @BigMarkWright_ . You wouldn't have wanted it any other way!!"
Meanwhile, Mark wasn't the only Essex favourite celebrating a birthday today. Former co-star Lydia Bright was also celebrating her own big day all the way over in Cambodia where she is currently travelling.