Jonas, 25, has reportedly been spending time with the 20-year-old model Hadid following her recent split from Australian singer Cody Simpson, reported Contactmusic.
The blonde beauty is said to be trying to make her ex-boyfriend jealous by spending time with Joe.
The couple had split due to their busy schedules and they didn't rule out the possibility of a reconciliation, according to Gigi's spokesperson.
"They love each other dearly and have split up in hopes that growing on their own paths will bring them together in the future.