"He doesn't react well to being called out," Courtney toldUs Weekly, "or women crying."
Arie and Courtney had an on-again, off-again fling beginning in October 2012. They began dating after Courtney's engagement to The Bachelor's Season 16 star Ben Flajnik ended, but it didn't last long.
Arie and Courtney were able to maintain a friendship following their split, however, as well as a seemingly spontaneous and sporadic physical relationship. Courtney revealed in February 2016 that she still liked to make out with Arie "from time to time."
"He's the best kisser I've ever kissed," Courtney gushed of the Season 22The Bachelor star, who has already done his fair share of kissing women on the show. "He's very passionate."
Arie's passionate nature is probably why Courtney considers him "the best sex I've ever had." She discussed in great detail her first sexual encounter with the pro racing driver in her 2014 memoir, I Didn't Come Here to Make Friends -- Confessions of a Reality Show Villain.
The pair's confusing dynamic has had Bachelor Nation talking for years, but Arie insisted their bond has been completely innocent and platonic for a while now. In fact, they mix a little business with pleasure, as Arie told E! News last month that he's her landlord.
"He's a gentleman and protective," Courtney assured Us of Arie's behavior as a boyfriend and partner. "[He's] always down for an adventure. He really takes care of the people in his life."
Arie has said he's ready to settle down in his hometown of Scottsdale, AZ, where he currently works as a real estate agent, but Courtney insisted Arie "hasn't given up" on racing just yet.
"Whoever he picks should be ready to travel with him. He's ready to settle down. He is very capable of a committed relationship," the model said.
Courtney believes timing is why her relationship with Arie didn't work out in the romance department, but there appear to be no hard feelings at all.
"Arie is a lot of fun," the single beauty revealed. "If there is good news, it's always 'Let's go celebrate!' His sense of humor is his best quality. I always loved just driving around listening to music together."