ROBERT'S READY to propose!

He's meeting the family - and looking at rings...

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Things must be serious between Robert Irwin and girlfriend Rorie Buckley - they're already celebrating the major holidays together! The cute couple looked delighted to be reunited at Perth Airport on April 6, after Robert flew in to enjoy Easter with Rorie, 19, and her family.

"Robert's absolutely smitten, and you can tell from his ear-to-ear grin," a source tells Woman's Day. "He's fallen for Rorie big time and who can blame him? She's a complete sweetheart, very kind and not at all intimidated by his world in the spotlight. She adores Robert and can't believe she's found someone so down-to earth in their world."