Some celebrity pairings make perfect sense and others leave us scratching our heads.

TakeZac Efron and Michelle Rodriguez, for example.

How did Efron and Rodriguez cross paths in the first place?

Zac Efron poses on the red carpet

Fans have so many questions and we might have a few answers!

However, just a month later, it was all over.

An insider advisedUs Weeklythat the couple had a massive blowout while vacationing in Ibiza.

Zac Efron and Michelle Rodriguez smile on the red carpet

A second source noted, “Michelle is going to do her own thing.

Zac knew this about her when he got with her.”

However, another insider assuredPeopleit was a mutual decision.