The DNCE singer enjoyed a brief relationship with Serfaty recently but the pair have now ended things and are no longer in contact, reported People magazine.
A source said, "They're not even talking anymore. That was made into a bigger deal than it was."
Serfaty, 24, spent time with Jonas, 26, in Las Vegas over the festive season after meeting through a mutual friend.
This was Jonas' first relationship since he split with model Gigi Hadid, 20, in November.