Zac Efron Proposes To Vanessa Hudgens

`Zac is relieved to be out of the pressure cooker, because Vanessa`s mother has been putting serious heat on him`.

Zac Efron has proposed to Vanessa Hudgens to please her mother.

The 'High School Musical' actor reportedly popped the question to his girlfriend of three years because her mom Gina Hudgens doesn't approve of the couple living together out of wedlock.

A source said: "Zac is relieved to be out of the pressure cooker, because Vanessa's mother has been putting serious heat on him to make an honest woman out of her daughter. She is old-school and doesn't approve of Vanessa living with Zac without some type of wedding promise."

Zac, 21, is believed to have asked 20-year-old Vanessa to marry him while they holidayed in Japan in January.

The couple spend most of their time living in Vanessa's six-bedroom Tuscan style mansion in Studio City, California - despite Zac spending $2.3million on his own modern, two-bedroom house in the Hollywood Hills last December.

The source added to National Enquirer magazine: "Zac loves the current arrangement. He adores Vanessa and they gel really well together. Gina already considers Zac a part of the family. So she's happy that he proposed."

It has been reported the couple - who met on the set of 'High School Musical' - hope to tie the knot sometime next year.