"She was the last girl I dated before I came here. As I have fallen in love with Ali I'm beginning to realise that I might still be in love with Nicole," he explains.
He adds that he is an "emotional wreck" and he needs to go to Chicago to talk to Nicole. He arrives at her apartment and explains that he has had "an amazing thing" with Ali since they met and his feelings for her are real, but he can't stop thinking about Nicole.
Nicole says that she's been thinking about him since he left and it's been "sickening" thinking about him getting closer to someone else. Frank says that he needs to know if there is still a spark between them, prompting Nicole to say that she isn't complete without him and he needs to come home. Frank nods and the pair kiss. He decides
He concludes that he is in love with Nicole and wants to spend the rest of his life with her, which means he has to find Ali and talk to her.
Individual Date - Roberto
Roberto and Ali share the first individual date in Tahiti. They take a helicopter ride around the island and land near a deserted heart-shaped lagoon. Ali says their physical chemistry is intense and that she would live a wonderful life if they ended up together. Roberto thinks he is "unbelievably lucky" to be with Ali, describing her as "perfect in every way".
They share a candlelight dinner and Ali questions if he sees a future, prompting him to reply: "Of course, or else I couldn't be here." He adds that there is something else that has been on his mind and she needs to hear.
"I spent the last week missing you and everything else. I feel like I've been closed off," he says. "This is crazy for me to open up like this and put it out there, but I feel like everything we've been through, I feel like it's important to tell you because I don't know how things will go... I'm falling in love with you."
Ali then presents the fantasy suite card - sent by Chris Harrison - which contains a room key. "What do you think?" asks Ali. "I think it would be a shame to waste a perfectly good couples' fantasy suite," he replies.
Individual Date - Chris L
They take a yacht around Tahiti and play in the water. Ali says that she is looking for the sort of love that is passionate but also friendly. They take a walk on the beach and find oysters which contain pearls, prompting Ali to compare it to their own relationship: "It was slow to develop but if you just wait and give it some time, you could end up with something really beautiful."
They later share a picnic dinner on the beach. "I can really see myself with you forever. You know that, right?" says Chris. Ali is happy that Chris has opened up to her and says it felt good to hear that. She wants to explore it further so presents the fantasy suite card from Chris Harrison.
"Do you want to?" asks Ali. "Yeah," he replies. As they walk to the suite, he privately says: "I love this girl 100%, I don't know how to verbalize it. I just know that I hate being away from her, I love being with her, I don't want it to stop."
He jokes to Ali that he's unsure how they will top the impressive suite on their honeymoon and says he doesn't care where they spend their lives - Cape Cod or San Francisco - as long as they are together. They kiss and he says: "God, I love you."
Frank arrives in Tahiti...
Frank turns to Chris Harrison for advice on how to approach Ali. Chris says that he knows Ali is crazy about Frank and she will be in "emotional turmoil" about this heading into the most important week of her life.
Ali arrives at Frank's hut and he says they need to talk. He explains about his feelings for Nicole and says that it wasn't until the hometown date when his family loved Ali and he thought about marrying her that he realised he needed to confront the feelings.
He says that Ali is "perfect in every way" and the only difference is he feels a "click" with Nicole that he can't explain. Ali becomes tearful and can't understand why he didn't tell her about his feelings before. She adds that it's "selfish" of him and she gave up everything to be there. They share a goodbye hug and Frank leaves Tahiti as Ali sits alone on the beach.
She is then joined by Chris Harrison and says she is starting to question herself now and feels "weak". She says the only thing she wanted from the men was openness and honesty and Frank couldn't do that. She later says that she has "high hopes" that her future husband is still there. Chris thinks it's important to have a rose ceremony despite what has happened, and Ali agrees. She says that she needs to hear Chris and Roberto accepting her roses.
Ali explains what happened with Frank and says she is "100% positive" that he is not the man for her, and she's thrilled to have "two amazing men" left in the competition. She hands the roses to Chris and Roberto in that order.
The Bachelorette continues next Monday at 8/7c on ABC
What do you think about Frank's decision? Who do you think Ali will end up with? Leave your thoughts below!