Singer Joe Jonas is reportedly in a relationship with former girlfriend of his brother Nick Jonas.

Joe has been spending a lot of time with model Gigi Hadid, whom Nick once dated before he started a romance with Olivia Culpo, reports radaronline.com.

"Joe and Gigi have hung out a few times... They have visited a museum together and even went to the park together on Thursday,` a source said.

"Nick and Gigi (had) an ongoing thing. The fact that Joe and Gigi are hanging out now is just strange,` the source added.