Peter Weber will need to look over his shoulder for more than just contestants on this season’s “The Bachelor”.

Kaitlyn Bristowe, a former star of “The Bachelorette”, shouted out to Weber ahead of Monday’s season 24 premiere. Bristowe revealed that her close friend is on the season and warned Weber of the potential consequences.

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“Good luck, [Peter]. We are all rooting for you. Unless you break my friend’s heart. She’s on your season. Then you will have me to deal with,” Bristowe teased.

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BABY KB!! Good luck, @pilot_pete we are all rooting for you. Unless you break my friends heart. She’s on your season. Then you will have me to deal with 💪🏼 (jk) Cant wait to record reactions tonight. Who’s gonna drink @spadeandsparrows with me tonight. I always question watching every season due to a little PTSD, overwhelming emotions, and knowing a little too much. But I just always want to support the people going through this “journey”. So while I have bitter feelings towards one person (not a contestant), out of hundreds, I will choose to love the hundreds of others who changed my life. I will try to remember the positive experiences. Let’s please all try really hard to not hate, or bully contestants this year. Try to remind yourself they are humans, not characters. Words hurt and you never know how you would be in these kinds of situations. A little chirping and teasing is fun, questioning people’s behavior is fine. Hate is not. Xoxoxo Wait on that note please don’t rip me apart for lookin different. I’ve aged 5 years, changed my teeth, have had Botox, and dyed my hair blonde. Of freakin course I look different. K let’s gooooooooo #TheBachelor

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Bristowe, 34, also reflected on her own experiences at the centre of the Bachelor Nation.

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“I always question watching every season due to a little PTSD, overwhelming emotions, and knowing a little too much,” she confessed. “But I just always want to support people going through this ‘journey.’ So while I have bitter feelings towards one person out of hundreds, I will choose to love the hundreds of others who changed my life.”

Weber will star in the season 24 premiere of “The Bachelor” on Monday night. The new season also features a surprise visit by “The Bachelorette” star Hannah Brown.