Sixteen years later, their made-for-TV romance has blossomed into a real-life love story. After two years of dating and endless speculation, the happy couple are now engaged - and expecting their first baby together!
"They are both very, very happy," a friend of the pair revealed. "It's still early."
To celebrate, HELLO! Online has rounded up 10 of Ashton and Mila’s sweetest moments together.
CLICK ON THE IMAGE FOR THE GALLERY