Today is Gregg Sulkin's birthday! The Faking It actor turns 23 years old today, and his rumored girlfriend Bella Thorne posted an adorable photo collage of them together for his b-day, calling him a "goof" and writing, "Hope you have a wonderful day with loved ones and an awesome night out!"

If you were shocked that they've been friends for years, you'd be surprised how many other celebs he knows. Gregg has been in the Hollywood game for a long time — and knows pretty much everyone in the industry.

Need proof? Click through to 23 photos of his celebrity friends, and let us know which one was your fave. Send him a happy birthday message in the comments!