It appears as though this friendship runs just as deep off-camera! Former reality star and daughter of musician John Mellencamp, Teddi Mellencamp of the Real Housewives of Beverly Hills has posted a very intense and heartfelt birthday message to her cast member and dear friend, Kyle Richards.

"It would be impossible to write a caption that shows what an amazing friend, wife and mother you are," said the former reality star. Kyle and Teddi's friendship had blossomed over the past couple of seasons on the show, with many fans and fellow cast members critiquing the two for being seemingly inseparable and taking each others sides no matter what. "In the years since we have met we have shared so many laughs and tears and I couldn’t imagine my life without you in it. Not to mention, I would be hard pressed to find someone who sends better memes and will go down any rabbit hole with me," added Mellencamp in her touching birthday with to Kyle.

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The message was accompanied by nine photos of the gal pals having a grand old time. Kyle, who turns 52 years old today, saw the wishes and responded by commenting on the post and saying, "Aw thank you. Grateful to have you in my life. Love you!". Teddi's firing from the show coincided with her coaching company coming under fire for promoting unhealthy practices, very restrictive diets, and a bullying method to get clients to drop weight. She even reportedly made clients sign non-disclosure agreements.

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Other RHOBH cast members who took to social media to wish Kyle a happy birthday included Lisa Rinna who shared a video of Kyle dancing on a table at Andy Cohen's birthday saying, "Happy Birthday @kylerichards18 YOU ARE AN ICON. Andy’s Baby Shower". Despite a few hiccups this past season, Rinna and Kyle have maintained a very strong friendship. Rinna also made amends with Kyle's younger sister Kim Richards, with whom she had a very strained relationship with a few seasons ago.

As it stands, Kyle is the oldest running cast member on the Real Housewives of Beverly Hills franchise, and has been since her former bestie Lisa Vanderpump exited the show.

NEXT: ‘RHOBH’: Teddi Mellencamp’s Company Is Under Fire For Alleged 500 Calories Per Day Diet