Vanessa Hudgens believes Austin Butler is the ''love of her life.''

The 25-year-old actress declared her feelings for the 'Carrie Dairies' star, 23, in an adorable heart-warming message she posted to her Tumblr page today (18.08.14), in which she also wished the hunk a happy belated birthday for yesterday (17.08.14).

She wrote: ''Yesterday was the love of my life's birthday. Happy birthday to the man with the kindest heart, beautiful soul, crazy talent and best looks I've ever seen.''

Vanessa, who has been dating Austin since 2012, also thanked the actor for encouraging her to reach for her dreams and for always uplifting others.

She added: ''He never stops inspiring me in every aspect of life and always lifts those around him up higher. I thank god so greatly for blessing the world 23 years ago by creating Austin Butler.''

Meanwhile, prior to dating Austin, Vanessa romanced her former 'High School Musical' co-star Zac Efron - who sought treatment in rehab for an alleged cocaine addiction last year - in 2005.

However, their romance came to an abrupt end in 2010.