Lily Collins, Zac Efron

Scott Kirklan/Getty Images; Jordan Strauss/WireImage

Grab your tissues: The summer has had its first couple fatality. Well, maybe.

US Weekly reports that Zac Efron and Lily Collins have officially split, with sources claiming The Lucky One and Mirror Mirror star's "casual thing" has "fizzled." So what went wrong? Per the report, "Zac was never very serious about her."

But instead of asking whether either of the hotties is nursing a broken heart, you should be asking yourself: Were they ever really dating to begin with?!

If you read the headline and thought to yourself, "Zac Efron and Lily Collins were a couple?! Who knew!" then you're probably not alone.

Though Zac and Lily sparked rumors of romance after being spotted a few times on the town (including a Valentine's Day dinner at the exclusive SoHo House in Hollywood), the hype around the "couple" never really took off.

And apparently neither did the actual relationship.

"They were never really together, so you could say they split, but they were never an official couple," a source close to the stars reveals about the breakup reports. "They hung out a bit, but it was super casual."

So what kept things from escalating for the couple that will now never be known as Zily?!

"They became friends after being introduced by mutual pals," our source continues. "But the chemistry wasn't there. I can't even remember the last time they saw one's been such a long time. So it never ended, because it never really started."  

Guess we'll hold off on our tears, then. We have a feeling this dreamy duo will have no problem bouncing back from their nonbreakup.

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