Gavin Casalegno is learning from Jeremiah Fisher’s mistakes.
Ahead of the third and final season of Jenny Han’s The Summer I Turned Pretty series—which premieres on Prime Video July 16—Gavin revealed what relationship advice he is taking away from his character’s love triangle with his brother Conrad Fisher (Christopher Briney) and longtime family friend Belly Conklin (Lola Tung).
“The big lesson of this show is to communicate,” Gavin told E! News in an exclusive interview. “I think for every character, there’s more of a level of communication, and I think we’ll see that here in this next season.”
But while Jeremiah is no stranger to drama and romance, the 25-year-old—who married Cheyanne Casalegno in an outdoor wedding ceremony last November—wants to do things much differently in his own relationship.
“Communication is probably the biggest thing to take into a relationship,” he explained. “You kind of see where it leads with the show, like, ‘Oh, they didn’t share this part and now there’s a little weirdness.’”
For her part, Lola, 22, thought the characters’ conflicts were rooted in much more than just lack of communication.
“Even more than that, it’s listening,” she said, “A lot of the time, these characters will not talk at each other but sort of jump to conclusions.
“I feel like I’m quick to do that sometimes because I’m stubborn and I’ll just be like, ‘Well, this is what you meant,’” she continued. “Instead of doing that, it’s good to give people some grace and to listen and not jump to conclusions.”
As for where the trio—who started their journeys as Belly, Conrad and Jeremiah four years ago—see their characters ending up years after the show ends? While they can’t be certain, they are confident that Cousins Beach has a bright future ahead of it.
“I would love to see Jeremiah really taking life by the horns and just coming into his own,” Gavin shared, “and being more of a full person and really discovering who he is.”
Meanwhile, Chris joked that he could see Conrad becoming an astronaut and thriving in space. And when it came to Belly, Lola predicted that she will undoubtedly stay true to herself and find her own path.
“I hope she’s living her life, traveling the world, doing what she loves,” she gushed, adding with a laugh, “in space.”
Ahead of the season three premiere of The Summer I Turned Pretty, keep reading to learn more about the cast’s real-life romances.
Lola Tung
There’s no love greater than self-love—just ask the leading star of The Summer I Turned Pretty! Lola may be single, but she’s learned a lot about love and life while playing Belly.
“I learned to sort of just go easy on myself a little bit because I think especially as a teenage girl, she’s very hard on herself,” she explained to Seventeen when asked about lessons she took away from the show. “I’m very hard on myself and she’s going through so much and making mistakes and that’s only natural. We all make mistakes and that’s how you learn and that’s part of growing up.”
She added, “I’ve very much tried to just take a little bit of the pressure off myself and just be more present and enjoy things as they come.”
Christopher Briney
Who is Conrad’s real-life sun? Isabel Machado.
Christopher and the actress-singer began dating in 2021 after graduating Pace University together. To mark their first “feelingsiversary” in May 2023, Isabel shared a photo of the couple sharing a smooch by a lake, writing, “so glad we kiss now.”
And when it was time for their actual first anniversary, Christopher celebrated the occasion with a heartfelt social media tribute of his own. “a whole year!?” he captioned a photo and video of the pair together. “i could never want anything else.”
Gavin Casalegno
Gavin, who plays Conrad’s younger brother Jeremiah, tied the knot with wife Cheyanne Casalegno during an outdoor wedding ceremony in November 2024.
“A lot of time, people say the first year of marriage is the hardest,” he told Page Six in in April 2025. “But being able to work on Kai Lo and the passion projects that we have actually made it really enjoyable and has helped us get on the same page creatively.”
“We just had a blast,” he continued. “You can’t take it too seriously. The second you do, is when all the joy gets sucked out of it. So we’ve really just been trying to enjoy ourselves and make the most of it.”
David Iacono
The Flight Attendant actor (he’s Cam on TSITP) is choosing to keep his love life off social media after dabbling with online dating. “I don’t use it at all anymore, but I think my bio on Tinder was like ‘Wait, this isn’t cool math games?'” he told PopSugar. “I thought that was funny. I do not like dating apps. They creep me out.”
Rachel Blanchard
Before Rachel tied the knot with Emmy-nominated composer Jeremy Turner, she was at the center of a strange Internet hoax that falsely claimed she was secretly married with two children.
According to the Clueless (the tv show, not the movie) alum, who plays Conrad and Jeremiah’s mom Susannah, the bogus rumor got so bad that she lost a job as a result. “I think I have an Internet stalker, who started that and then won’t take it down. I keep having it taken down and he keeps putting it back up,” she told ABC News in 2014. “It’s really annoying.”
Sean Kaufman
Sean has largely kept quiet about his relationship status, though his bromance with his co-stars is going strong. Of his friendship with Christopher and Gavin, “I love these two to death—they have become two of my closest friends over the past year,” the actor, who stars as Steven, told Seventeen, “and I’m extremely thankful for that.”
“We’ve got so much in common,” he continued. “The three of us are crazy. I love them, we still hang out all the time whenever Gavin’s in New York.”
Jackie Chung
Also known for her roles in Grey’s Anatomy and Station 19, Jackie (she plays Belly and Steven’s mom Laurel) is married to Hunters star Louis Ozawa. The pair share two kids together, but have previously said that they consider their dog Atticus as their “first born.”
Minnie Mills
As a wise, lovesick teen once said: “Boys may come and go, but a friendship lasts a lifetime.” While Minnie hasn’t shared much about her love life, the actress who plays Shayla has forged a bond like no other with her castmates. In the past, she’s referred to co-star David as her “partner in crime” and Sean as her “best friend.”
Tom Everett Scott
His character may be MIA from Susannah’s life, but Tom has spent many summers with Jenni Gallagher, having been married to the actress since 1997. The couple share two kids together.
Summer Madison
The actress enjoyed quite the Hot Girl Summer, appearing in three TV shows and the dramedy Emergency in 2022. However, it does not appear that Summer, who plays Nicole on the show, is linked to anyone at the moment.
Colin Ferguson
Colin, who plays Belly and Steven’s dad John, shares a son with Lindsay Thompson.
Rain Spencer
Though Rain is active on social media, the actress, who plays Belly’s BFF Taylor, has kept details about her love life on the down-low and uses her Instagram to share pictures of friends, including the cast!
