I’m In Love With My Brother’s Best Friend is yet another romantic vertical drama with a love triangle as the focus! We follow the stories of Kaitlyn Sinclair, whose boyfriend cheats with a mean sorority girl.
Thankfully, Kaitlyn’s older brother’s best friend gets her back and the two fall in love!
- Part 1: I’m In Love With My Brother’s Best Friend Cast Introduction
- Part 2: Breaking Down I’m In Love With My Brother’s Best Friend Movie Story
- Part 3: Is There any Book Version of I’m In Love With My Brother’s Best Friend Movie?
- Part 4: A ReelShort Movie Alternative to I’m In Love With My Brother’s Best Friend
Part 1: I’m In Love With My Brother’s Best Friend Cast Introduction
Kaitlyn Sinclair (Maria Barseghian)

The situations around Kaitlyn Sinclair of I’m In Love With My Brother’s Best Friend movie force her to move out. In this case, Kaitlyn should share an apartment space with Cole Hart, her older brother’s best friend.
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It’s not easy to navigate to the new apartment life after the blatant cheating Kaitlyn experiences. More precisely, Kaitlyn’s ex-boyfriend doesn’t only cheat. He also conspires with two mean sorority girls to spike her drink.
At this point, Kaitlyn’s attempts to preserve her virginity status seem to fail. After all, her dreams about Cole Hart, her brother’s best friend, have seemingly come true.
Kaitlyn starts to get the protection she deserves after she moves into her brother’s apartment. The apartment becomes the first place where she and Cole meet!
Cole Hart (Christopher Quartuccio)

Cole Hart of I’m In Love With My Brother’s Best Friend vertical drama isn’t just another grad school student. His role in this upcoming vertical drama series also doesn’t stop at being Kaitlyn’s brother’s best friend.
Instead, Kaitlyn’s campus mates acknowledge Cole’s reputation. Many girls have become sorority girls to fulfill their wildest fantasies about this hottie. Cole also always comes on top of his class, making him even more emotionally unreachable.
Her encounters with Kaitlyn begin when she shows up in his apartment space. At that point, Cole will soon be Kaitlyn’s teacher assistant. He also has to deal with Amber, his crazy ex who never seems to move on from him.
Maddy(Gabrielle Cody)

I’m In Love With My Brother’s Best Friend vertical drama acknowledges Maddy as the smokin’ hot and experienced sorority president. One of her loyal minions’ names is Lydia. Together, they love to make Kaitlyn experience a miserable life.
The first sin Maddy commits is to steal Kaitlyn’s high school boyfriend. Then, she collaborates with Kaitlyn’s ex-boyfriend to spike Kaitlyn’s drink. She also mocks Kaitlyn’s virginity alongside other mean sorority girl groups.
Brent(Raffi Manjikian)

Brent of I’m In Love With My Brother’s Best Friend movie used to be Kaitlyn’s high school sweetheart. Back then, Brent seems like a patient boyfriend who respects her virginity. However, at such points, Kaitlyn hasn’t realized Brent’s motivation.
Brent only uses his preserving virginity persona as a tactic to make Kaitlyn move in with him. Meanwhile, he cheats with the sorority president, Maddy. He also pleads for Kaitlyn to have a threesome with him and Maddy in his apartment.
Brent’s scary and persistent personality doesn’t only drive her away. These personalities also become Kaitlyn’s reason for seeking her older brother’s help. She ultimately finds her love in Cole this way!
More Cast Details
Ryan Sinclair: Ben David Carlson
Prof. Callaway: Tara Haight
Amber: Eleanor Louise Foushee
Lydia: Finty Kelly
Mikey: Jack Carter Barton
Nat: Lily Brody
Sammy: Michelle Julian
Chad: Daniel Quinn O’sullivan
Lance: Isaías Rene Perez
Officer Norman: Charles Massey
Part 2: Breaking Down I’m In Love With My Brother’s Best Friend Movie Story

The storyline of I’m In Love With My Brother’s Best Friend movie involves Kaitlyn Sinclair’s transition from high school to college life. She is 18 years old at the start of the movie, making her an adorable college freshman.
Now, she still has lingering memories about Brent, her muscular yet seemingly faithful high school sweetheart. In other words, Kaitlyn places her hope in Brent. Unfortunately, Brent’s publicly displayed affection for another woman forces Kaitlyn to end their relationship.
Brent’s creepy threesome invitation even scares her off. Fortunately, the cute and studious Ryan Sinclair, Kaitlyn’s older brother, steps inside.
We believe life will feel much better after Kaitlyn moves out with Ryan! However, this time, she also stays with Cole Hart, Ryan’s overachiever best friend.
Exchanging gazes with Cole causes Kaitlyn’s mind to wander to the flashbacks. Kaitlyn remembers her passionate kisses and ONS moments at that time. She even experiences a wild dream about Cole. Yet, she didn’t know anything about this grad school hottie.
Kaitlyn’s college mates are aware of Cole’s reputation. So, the jealous and bitter parties, including Cole’s ex, Amber, try to separate them.
Still, will they succeed in doing so? What else will happen after Cole becomes Kaitlyn’s new teacher assistant?
Part 3: Is There any Book Version of I’m In Love With My Brother’s Best Friend Movie?

We believe many book versions of I’m In Love With My Brother’s Best Friend vertical drama have existed. All of them should belong to the teen romance genre.
Some of them have the same high school to university transition as the theme. Some others have extracurricular a.k.a. student activities as the sub-themes. We believe the latter differentiates the book from the movie version.
The book version could narrate Kaitlyn’s encounter with Cole Hart in her student activity. We can imagine the student activity to involve wine-tasting among students. That way, graduates like Cole and undergraduate students like Kaitlyn can mingle.
Kaitlyn never knew her high school boyfriend would conspire with some unknown girls to spike her wine. It causes her to get into an ONS with Cole. A few days later, she realizes something happened unusually with her menstruation cycle.
Kaitlyn is pregnant, but she hopes for Brent, her high school boyfriend, as the kid’s father. Her hope crumbles after she witnesses Brent’s hook-up with another girl. It turns out Maddy, the girl, is also Cole’s ex-girlfriend!
Part 4: A ReelShort Movie Alternative to I’m In Love With My Brother’s Best Friend

Apart from the struggling college transition, I’m In Love With My Brother’s Best Friend movie also has some steamy scenes! The brother’s best friend as the love interest also spices up the slightly forbidden romance warnings.
The love triangle backstory involving Kaitlyn and her ex-high school boyfriend also makes us want to see this movie!
In the meantime, all we can do is recommend you to watch a similar movie. The movie’s title is My Dear Brother Is Obsessed With Me. In this movie, Violet, a newcomer actress, gets a lucky hire in the West Media.
Clyde, the West Media’s director, hires Violet to pose as his dead sister. Who knows if the plays will lead to their romantic fairy-tale moments?
Watch this movie on ReelShort and feel their vibes!