Zac Efron

Zac Efron

 Zac Efron and Lily Collins have reportedly split after dating for just three months.

The pair sparked speculation of a romance after they were spotted enjoying an intimate dinner in February (12), just before Valentine's Day, which they also spent together.

However, the romance has now "fizzled out" due to their hectic schedules, according to

A source tells the website, "They're no longer together. They were never serious, though; it was just a casual thing and it fizzled (out). They were never in the same place at the same time".

Collins had previously dated Twilight hunk Taylor Lautner, while Efron had a long-standing public romance with his High School Musical co-star Vanessa Hudgens.