Cole Sprouse is reportedly the one who broke up with Lili Reinhart.

The Riverdale stars, who called it quits after nearly two years of dating, allegedly broke up earlier this summer, and now a new report claims the former Disney Channel star ended the relationship with the actress after an argument.

"Their relationship has always been up and down," an insider told E! News. "They split this time after an argument while on their break from filming. Cole decided to end the relationship."

Though we don't know what the fight was about, other sources told People, "Things have felt super heavy in the relationship for a while, and it got to be too much," adding, “They’re both very professional though and trying to be as amicable and friendly as possible.”

The good news is their reconciliation might be "inevitable" since Sprouse and Reinhart will be spending a lot of time together again now that Riverdale is back in production. The pair, who play the beloved characters Jughead Jones and Betty Cooper, are a couple on the hit CW series and sources say "it's very likely they will mend the relationship and get back together."

"They spend A LOT of time together on set," the insider added. "They have a lot of chemistry and it's hard for them to deny that they truly care about each other."

The two are currently still broken up, but the Riverdale cast is "rooting for Cole and Lili" and "all try and make light of the situation with jokes on set. It is a very close-knit family and so they try and brush their issues under the rug because they have to spend a lot of time together."

"No matter what the outcome is, they will all still be friends," the source revealed.