Alleged “Proof” That Two 5th Gen Idols Are Dating Each Other

ALLDAY PROJECT’s Youngseo and Woochan have incredible chemistry, which has led to ongoing dating rumors.

ALLDAY PROJECT’s Youngseo and Woochan

1. Deleted Photo

A now-deleted photo of Youngseo and Woochan went viral, due to how close the stars looked. Some people believe this proves that the group-mates are in a relationship, but others suspect the photo could be a viral marketing stunt.

| Nate Pann

They said it was up as the thumbnail but then got taken down.. so suspicious lol

— Post caption

2. Live Broadcast

Speculation about Youngseo and Woochan reignited after an Instagram Live sparked dating rumors, fan debates, and viral posts across multiple platforms.

| @jowoochan_santa/Instagram

Youngseo and Woochan went live on Instagram with fellow member Annie. In one widely shared moment, Woochan leaned in close over Youngseo to adjust something on the screen. The brief interaction led some people to wonder if the two are more than friends.

ㅅㅂ 거의 안겼잖냐…. 이게 커플 아니면 뭐냐…… pic.twitter.com/CTmyrVlm9B

— 오공 (@05_0120X1113) August 9, 2025

Damn, they were practically in each other’s arms… If that’s not a couple, then what is…

— Fan via X

3. Their “Couple Item”

Youngseo and Woochan went viral after showing off matching phone cases at a Casetify event. On July 15, the rookie co-ed group attended a promotional event for Casetify’s custom phone case drop. Youngseo and Woochan’s seemingly coordinated cases immediately caught fans’ attention.

4. Their “Flirty Footage”

The two idols took part in a staring challenge for Eyesmag. What started as a game snowballed into full-blown dating rumors. The short video, which racked up millions of views on Instagram, shows Woochan and Youngseo facing each other in silence while trying not to laugh. Fans immediately noticed the way they exchanged glances, smiled shyly, and seemed unusually close.

this staring game was kinda crazy… the eyes are the windows to the soul, and wooseo's gaze holds the stars and the sea pic.twitter.com/mCMsupzIzj

— angel ꫂৎ (@fixonjovng) October 5, 2025

The moment soon made its way to Pann, where netizens began debating whether the two were just close friends or if there was something more going on between them.

Even the song playing is Bol4’s “Grumpy.” The whole thing gives total ‘flirting high school crushes’. LOL. Youngseo keeps acting all shy, and Woochan’s face looks like he’s pretending to be calm on the outside, but clearly thinking all sorts of things inside, haha. Can’t believe I’m seeing this kind of thing on an idol stage. It’s refreshing in its own way.

— Viral Pann post

Though the rumor mill shows no sign of slowing down, nothing has been confirmed. However, Youngseo did respond to a fan who expressed concern about her closeness with Woochan.

ALLDAY PROJECT’s Youngseo Responds Directly To “Warning” About Dating Rumors With Woochan After Backlash