CT Tamburello is showing Phaedra Parks some birthday love, and he's borrowing a little inspiration from 50 Cent to get his message across.

The Challenge veteran celebrated his girlfriend's birthday with an Instagram Reel featuring the Real Housewives of Atlanta star making a playful duckface for the camera. Instead of writing a lengthy tribute, Tamburello kept it short, referencing 50 Cent's 2005 hit "Best Friend" in the caption .

“🎼If I was your best friend…🎶” he wrote, before adding, “Happy Birthday, Dollface. 🎂”

The post also came with an extensive guest list of tagged accounts.…