Jacob Elordis Eye-Opener on Kendall Jenners Circle

has no doubt worked alongside some of the biggest names in Hollywood, but even he, it seems, is not totally immune from feeling 'starstruck.'

As his romance with appears to heat up, a source exclusively tells the Daily Mail that it is her A-list posse that has truly swept him off his feet.

'He is thrilled with her social circle, which he has called "impressive" because it's all heavy hitters,' the source said. 'It's one big name after another. Jacob is starstruck for sure.'

Most recently, the Australian Oscar nominee, 28, has been seen with 30-year-old Jenner's VIP inner circle – including her sister , 30, as well as , 29, and her husband , 32.

And he is especially impressed with Jenner's billionaire half-sister , 45, who he 'thinks the world of and respects lots' because of her companies like SKIMS and her moves in the acting world.

It seems a far cry from the 'LA brats' his ex-girlfriend Olivia Jade Giannulli surrounds herself with, according to our insider.

Giannulli, 26, the daughter of Full House actress and fashion designer , dated the actor on and off for four years before officially calling it quits.

And, according to the source, while Elordi 'loves Giannulli to pieces and they're still friends,' he had a hard time with her group.

'When he was with Olivia, their circle was a bunch of LA brats who liked to party,' the insider said. 'Olivia is great, she is a nice girl, but a lot of her friends are privileged, they are kind of a snobby bunch.' 

By contrast, Jenner's circle 'is much more elevated.'

'Everyone is focusing on IPOs and how to become a billionaire,' the source said. 'It's a new level and he is thrilled. In Kendall's camp, everyone helps each other out.'

And Jenner's mother, Kris, 70, is especially keen to be a good friend to Elordi.

Elordi was recently spotted with Jenner, her sister Kylie, and Chalamet