Justin Bieber and Sofia Richie are "on a love-fest right now".

Justin Bieber

Justin Bieber

The 'What Do You Mean' hitmaker is enjoying his time with the 17-year-old model but isn't at a place in his life right now where he's ready to settle down.

A source told PEOPLE magazine: "Sofia and Justin are basically on a love-fest right now, but it's virtually impossible where he's at in his life and career for anything to last with these girls. These girls all go crazy for him, but he's not settling down. They've run in the same circle for years."

Meanwhile, Justin sent his fans into a frenzy when he deleted his Instagram account following a war of words with his ex-girlfriend Selena Gomez on the photo sharing site.

The 22-year-old singer posted a message to his fans, telling them: "I'm gonna make my Instagram private if you guys don't stop the hate this is getting out of hand, if you guys are really fans you wouldn't be so mean to people that I like. (sic)"

But Selena was unimpressed, replying: "If you can't handle the hate then stop posting pictures of your girlfriend lol - it should be special between you two only. Don't be mad at your fans. They love you (sic)."

Justin soon shot back: "It's funny to see people that used me for attention and still try to point the finger this way. Sad. All love. I'm not one for anyone receiving hate. Hope u all can be kind to my friends and each other. And yes I love my beliebers (sic)."

Selena then accused her former boyfriend of cheating on her but he wanted to have the last word.

He wrote in response: "I cheated ... Oh and I forgot about you and Zayn (sic)."