After Graham Bunn left Bachelor in Paradise and started questioning his relationship with AshLee Frazier, many wondered the true reason why the contestant left the rose ceremony only to give her another chance.

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Bunn originally started doubting his relationship with Frazier because she gossiped about Clare Crawley's past. "I had genuine interest in her so I wanted to make sure that I gave it every opportunity. I didn't want to have any regrets," Bunn told ABC News Wednesday. "At this point, AshLee [hadn't] given me her side. I wasn't prepared to make a final judgment on the potential relationship at this point."

So, what was the real reason Bunn ran out of the rose ceremony then? He was sick. According to Bunn, he felt "lightheaded" and had been battling food poising. "I was a little stressed out [too]," he admitted. The only person to follow Bunn to make sure he was okay was old pal Michelle Money.

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"[AshLee's inaction] didn't register until the next day when I started to feel better. Looking back on it, I was disappointed," he said. "I wish AshLee had dropped everything to make sure I was OK because I would do that for her."

Bunn admitted that fans should expect people to get "wacky" on the show in the upcoming episodes and more between him and Frazier.

"She possesses a lot [of good qualities] and I don't regret a second that I spent with her in Mexico," he said. "[However] I'm not perfect. I make mistakes."