They may never, ever be getting back together, but that hasn't kept fans from daydreaming about it. While some of her bestie Taylor Swift's music may as well be a theme song for Selena Gomez's relationship history with Justin Bieber, her followers aren't ready to give up yet.

Though the two split for the [seemingly] final time in March of 2018, and Justin went on to marry Hailey Baldwin in September of that year, their shared history means fans continue to obsess about the breakup and the excessively minuscule chance that the two singers will ever reconnect.

Luckily for troubled fans, Elle brought in some experts to explain why people are obsessed with "Jelena," even going so far as to troll Hailey Bieber over her hubby's ex.

RELATED: Selena Gomez Has This To Say About Demi Lovato's Recent Music

There are layers to the public's obsession with Selena and Justin's past relationship, notes Elle's expert. They were together a long time, albeit off and on, especially for a couple who got together as young teens. Plus, five years is a super long time by most Hollywood standards.

But the main issue with Jelena is that both Selena and Justin both released music about their relationship, including the highs and lows. Fans argue that their breakup songs are some of their best tracks, and their relationship intertwining with their past albums makes their stage personas hard to separate from their personal lives.

Another issue? The fact that Justin was the media "bad boy" for so long. Selena was the good girl, and their dynamic was that classic she'll-fix-him conundrum... Though Selena did pen a song about how she wouldn't be the one to fix him.

Of course, they did get back together again after Selena released "It Ain't Me"...

Apart from their music, Justin and Selena seemed to have a connection that fans totally bought into. Each time they broke up, they always seemed to fall back into each other's arms.

Fans didn't even care when Selena seemingly broke The Weeknd's heart, spurring an entire album that hints at how their relationship fell apart, says Harper's Bazaar. Of course, some of his songs were about his other ex, Bella Hadid, but it's clear that Selena's had a troubled relationship history.

Which is another point that Elle's psychology expert notes: fans love drama, especially reading into drama. For example, remember that pic of Justin crying in the car with Hailey? Fans found out later that his seeming breakdown was somewhere around the time of Selena's kidney surgery, so then they assumed he was freaking out over her health.

Really, though, no one knows how either of them feels except them. And since Justin's literally married to someone else now, the odds are exceedingly low that fans will get their wish for Jelena to make a comeback.

TBH, it doesn't seem like the relationship was that healthy (or swoon-worthy) in the first place. And yet, millions of fans still ship them, and probably won't ever stop.

NEXT: 10 Sweet Instagram Photos Of Justin And Hailey Bieber