Are Zac & Vanessa Back On???

Spotted: Zac Efron, pulling into his ex-girlfriend’s driveway, yesterday, shortly after she returned from a chiropractic appointment.

Vanessa Hudgens hasn’t said much about her breakup from Zac and neither has he, so perhaps their silence is a telling sign that things aren’t as over as we would like them to be they seem.

Is Zacnessa back on??? We must know!!!

[Image via WENN.]