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[An Adulterous Love] A love song about a secret affair you can't tell anyone about

Affairs are generally considered taboo by society, but sometimes you might fall for someone without knowing they’re married.

You probably have feelings you’re keeping tucked away in your heart, too.

This article introduces songs about “affairs.”

Some songs depict people already in an affair, while others are about accepting there’s no future and choosing to part ways.

Many of these tracks express painful emotions, so you may find one that resonates with how you feel.

If you’d like, try listening to any songs that catch your interest.

[An Affair of the Heart] A love song about a secret, unspoken romance (71–80)

coming home in the morning (after staying out all night)Haruki Hamano

Hamano Haruki “Morning Return – Asagaeri” (Official Music Video)
Haruki Hamano coming home in the morning

A gem-like love song that delicately portrays the aching feeling of being unable to confess one’s true feelings.

Singer-songwriter Haruki Hamano masterfully captures the complex emotions of a woman struggling with being “the convenient one,” drawing a flood of empathy on social media.

Released in 2023, the song gained traction on TikTok and earned high marks on streaming platforms.

It carefully depicts a woman’s wavering emotions—caught between hope and self-loathing—in a relationship where she shares the night with someone yet can’t become their first choice.

This work offers comfort and companionship to those who have experienced unrequited love.

Fake loveSTUPID GUYS

A melodious love song by STUPID GUYS that portrays the ache of a bittersweet romance.

The complex emotions of a man and woman wavering between a physical relationship and pure affection are expressed through mellow vocals and rap, weaving delicate words to depict a heart drowning in desire while harboring self-denial.

Included on the album “False Love,” released in July 2019, the track has garnered over 4 million views on YouTube.

It’s a song that resonates with those troubled by a love they can’t tell anyone about, or suffering from a love built on pretense.

worst; minimum; the lowest; awfulRen

Ren – The Worst (Music Video)
Sairei Ren

Carried by a piano melody where poignancy and fragility melt together, Ren’s translucent voice resonates throughout.

Portraying the anguish and heartache of a protagonist who can’t forget their feelings even while their lover keeps secrets, this work lays bare the inability to say anything to someone who’s crying, as well as the anxieties and frustrations lodged in both hearts.

Released in October 2022, it sparked major buzz, with a short video set against Tokyo’s night skyline—posted on social media—surpassing one million views.

With lyrics and a melody that speak to Gen Z, this song gently embraces listeners struggling with impossible love, such as affairs or unrequited feelings.

A love I can tell no one abouterica

erica – “A Love I Can Tell No One About”
A love Erica can't tell anyone about

This love song is said to have been made for a fan with an unrequited crush.

Because it was based on real feelings, it has a super realistic vibe.

They fell in love, but the other person already has a partner, and there’s no one they can talk to.

The protagonist regrets having a forbidden love and sinks into terrible self-loathing.

Still, keeping quiet forever is too painful, so they decide to take a step forward.

No matter what kind of love it is, holding it all inside is hard, isn’t it?

Let me peek into the depths of your eyes.Porno Graffitti

PORNOGRAFFITTI “Let Me Peek into the Depths of Your Eyes (Short ver.)”
Let me peek into the depths of your eyes, Porno Graffitti

It’s a love song in Porno Graffitti’s signature Carmen style.

It truly sings of an ‘forbidden love,’ expressing the dangerous give-and-take of romance with beautiful words.

It’s like watching a novel or a movie, drawing you into the world of the two lovers.

Is the boyfriend older, perhaps? He seems to know every trick in the book when it comes to love.

The woman wants to probe his true feelings, but he absolutely refuses to reveal what’s in his heart.

sly personMio Yamazaki

I don't intend to ruin your happiness, but [a cunning person]
Mio Yamazaki, the sly person

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.

Bad personKano Sennritsu

Kano Kanaru “Bad Person” M/V
Kanano Senritsu, the bad person

A gem of a love song that beautifully captures the complex emotions of a woman torn by a forbidden love, with a heartrending vocal and delicate lyrics.

Kayayu from Young Skinny—a favorite among Gen Z—wrote the song, and Kanano Senritsu delivers a fragile, poignant performance.

Since its release in September 2024, it has resonated on social media, delicately depicting the turmoil of a woman who forgives even as she recognizes her partner’s lies, and the ache of memories that resurface with the changing seasons.

Its universal lyrics invite anyone struggling in love to see themselves in the story.

It’s a song that gently stays by the side of those overwhelmed by complicated feelings for someone who can’t exactly be called a good person.