If you're wondering what those chiming bells you keep hearing are, it's probably just the *NEW ROMANCE WARNING* being issued over some rather curious pics of Bella Thorne and Tyler Posey having a rather public snog over the weekend.

Spotted out and about in Hollywood, the pair were packing on the PDA, holding hands and having a bit of a kiss, leading everyone to wonder if they are now officially dating.

According to E! News, it's early days for the relationship and a source apparently tells them thatthe two "are hanging out and testing the waters and seeing where it goes," but adds that the pairing is "nothing serious at the moment."

Ooh and also ERR.

As you might recall, Bella split with long-term boyfriend Gregg Sulkin in August and maintained that even though they aren't together, they will remain friends. She also recently revealed her bisexuality.

Still, this romance development sort of makes the following photo mildly awkward, doesn't it?

To be fair, Bella and Tyler have been mates for ages and were romantically linked before she and Gregg became a thing,so fair play to both of them.

What do you make of this news? Comments to us at @MTVUK please.