There's nothing like your first, true love. Just ask actor Zac Efron, who recently confessed he'll always adore his High School Musical costar and sweetheart Vanessa Hudgens in a sweet throwback pic.

More specifically, he included her in an affectionate post of a photo with on-screen classmates Ashley Tisdale and Corbin Bleu from the Disney movie musical.

“So grateful I came across this picture… With the o.g. crew during one of the most cherished and exciting times of my life," wrote Zac, 28. "Love you guys forever. #fbf.”

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The post is curious considering that there's rumored bad blood between Zac and Vanessa, 27, since their contentious split and he's been quoted as saying he "hated" who he was during his HSM days.

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Oh well. Guess a little nostalgia can conquer even the most painful feelings. And who knows? Maybe Zac is just growing up and has finally moved on with his life. Either way, it's a pretty cute flashback!