[Adultery Song] A forbidden song about an affair that sings of an impossible love
Moments that made you happy, times when you felt joy, even the smallest bits of happiness—yet you can’t tell anyone… Have you ever had a love like that? Maybe you think, “I’d never get into a love that won’t be returned!” But before you know it, you might find yourself thinking, “Somehow, I’ve fallen for them…” In this article, we’ll introduce songs we want you—someone going through that kind of sad love—to listen to.
There are countless love songs out there, but we’ve carefully selected ones that are perfect for those struggling with unrequited love.
May you find a song that stays close to your heart.
- [Cheating Song] A forbidden love that crossed the line — infidelity song
- [An Adulterous Love] A love song about a secret affair you can't tell anyone about
- Unattainable Love: A Heartbreaking Love Song About Falling for a Married Person
- A classic song about a forbidden love
- [Unattainable Love] A love song about two people who feel the same way but can’t be together
- [Unrequited Love] Heart-wrenching Love Songs | A Roundup of Tear-Inducing Crush and Breakup Tracks
- A song of forbidden love. A heartrending, sorrowful love song.
- A song of forbidden love. A love song about feelings that can't be stopped.
- Bittersweet love songs to listen to when the person you like already has a girlfriend or boyfriend
- [Songs About Loving Yet Parting] Love songs for those who want to overcome heartbreak
- “I Want to See You”: A love song that makes you cry when you listen to it while you can’t meet
- A Tearful Farewell Song: A Love Song About Parting with Someone You Love
- [Today’s Heartbreak Song] A poignant love song that gently wraps your wounded heart
[Adultery Songs] Forbidden Songs of Affairs Singing of Unattainable Love (91–100)
Adult code of conductShiina Ringo

Produced by Ringo Sheena and selected as the theme song for the TBS drama “Quartet,” this work is a forbidden adultery song that portrays the secrets and inner conflicts carried by two lovers.
The heavier responsibilities that come with adulthood, and the loneliness of living with feelings you can’t confide to anyone, are vividly reflected in its striking lyrics.
Sung by the unit “Doughnuts Hole,” formed by the drama’s four lead actors, the song aligns beautifully with the story and is sure to resonate with people of all generations struggling with love.
Even if the romance is unattainable, please take time to savor this track, which listens to and stays close to those feelings.
Street Loveindigo la End

This is a love song by indigo la End about a finished romance that must not be known by anyone.
It’s included on their 2019 album “Nureyuku Shōsetsu” (My Soaking Novel).
The song feels like a letter addressed to an ex-lover, conveying lingering attachment and frustration—though they’ve broken up, the feelings remain.
It says, no matter what happens, I want to keep loving you, but knowing those feelings won’t reach you anymore makes it all the more heartbreaking.
Depicting pure love and the painful outcome of a difficult relationship, it’s a breakup song recommended for anyone experiencing an unrequited love.
[Adultery Songs] Forbidden songs about affairs that sing of unfulfilled love (101–110)
So it wasn’t me, huh.riria.

This song, Riria.’s “It Wasn’t Me, Was It.”, pierces the heart with the feelings of the so-called ‘second woman’ seen from a woman’s perspective.
When you’re having an affair or a love you can’t tell anyone about, you probably end up bottling up a lot of emotions inside, don’t you? In this song too, there are lyrics about keeping quiet and enduring—wanting to continue the relationship—even though she sensed his actions and attitude and kind of knew what was going on.
I’m sure many people will relate.
You can also feel that, even knowing the truth, she just couldn’t help loving him so much.
366 daysHY

A bittersweet love song that sings of unforgettable feelings for a former lover.
“If only I’d told you how I felt from the start, maybe I wouldn’t be hurting so much…” Even if you regret it, it’s already too late.
The more you try to forget, the more you can’t stop thinking about that person.
Perhaps such secret feelings you can’t tell anyone are best left to time.
But this song isn’t just about single-minded unrequited love.
In fact, it’s also said to be a song about a forbidden love for someone who already has a family.
What kind of love story does it bring to your mind? Featured on HY’s April 2008 album HeartY and used as the theme song for the film Threads of Destiny, this piece is a must-hear ballad for anyone struggling with love.
sly personMioyamazaki

Mio Yamazaki captivates many women with songs that set raw, unfiltered lyrics about a woman’s heart to loud rock sounds.
It seems the protagonist of the lyrics has fallen for a man who already has a family.
Even though she knows it can never be a happy love, she can’t help liking him and wanting to see him.
The lyrics portray the pain of an affair and the anguish of being unable to escape.
blue skyaiko

From a woman’s perspective, aiko’s love songs—filled with the feelings of being in love—are especially popular among women.
Her song “Aozora” (Blue Sky) is her 39th single, released in 2020.
Despite its poppy and bright sound, it’s a sad love song about a love that won’t go straight and won’t come true.
The freshness of the title “Blue Sky” and the song’s pop quality only serve to amplify the sadness.
While it’s a breakup song, there are parts that can also be heard as a song about an affair, making it a story of a painful love.
AitaiKato Miria

When it comes to timeless songs you want to listen to when you’re going through heartbreak, you can’t leave out “Aitai.” It’s a track from Miliyah Kato’s 2009 album “Ring,” and it was used as an insert song in the 2010 film “Akunin” (Villain).
Many women have likely been moved to tears by the lyrics, which earnestly express a woman’s single-minded devotion.
“Even if you’re not kind to me, even if you have someone else, I still love you…”—that kind of sorrow tightens your chest.
It’s a highly recommended song for those times when you want to cry your heart out because you can’t see the person you love.


