"The Mortal Instruments" Lily Collins is officially over Jamie Campbell Bower. Obviously, a "Jamily" reunion is unlikely to happen given Collins has been seen with another actor over the past few weeks. Since production for "City of Ashes" has been delayed, Lily has been spending much of her time with none other than her ex-beau turned current beau, Zac Efron.

Zac Efron and Lily Collins had first sparked dating rumours when they were seen over the weekend. The two had been photographed walking back to their car following their movie date. Efron was the first to slam the dating rumours claiming him and Lily were nothing more than "friends."

However, the two were once again spotted in the happiest place on earth, Disneyland. Obviously, the place was emitting such "happy vibes" that Lily and Zac had grabbed hold of each other's hands. This certainly isn't something "friends" would naturally do. Could Lily and Zac be playing it safe?

"They were never really together, so you could say they split, but they were never an official couple," says a source to E! Online, adding, "They hung out a bit, but it was super casual."

The two were linked back in 2012 but had split after a few weeks given their separate schedule constraints. Following Zac's successful rehabilitation, Lily Collins was allegedly one of the "good influences" on his life. This would explain their meet-ups for the recent weeks. Yet, could "good friends" be all there is for Lily Collins and Zac Efron?

Hopefully this time around, their relationship lasts. Check out the slideshow to see more of "The Mortal Instruments" star, Lily Collins.

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