The guy is question is Kourt's on-again-off-again boyfriend, Younes Bendjima, with the couple spotted looking very cosy as they partied together in Miami last week.
An eyewitness told TMZ that Kourtney and Younes “looked very much like a couple” while partying at LIV in Miami — talking, laughing, and listening to Kendall spin tunes by Miley Cryus and Travis Scott.
“Scott will always have a real deep love for Kourtney and he knows it’ll never work because of things he’s done in the past, but he owns this,” the source continued.
“He’s such a different person now, but it’s really been hard for him lately.”
“He wants her to be happy, but seeing her with other guys reminds him that they’re not together because of his actions,” the insider adds.
“He’d do anything for her and they’re in a really great place and Scott would really like to make sure he’s with Kourtney and the kids for the holidays.”
Meanwhile it seems that it's full steam ahead for Younes and Kourtney.
Rumours of a reconciliation went wild after Younes attended Kourtney's 40th birthday party in April.
A source told HollywoodLife at the time that Younes, “regrets how things ended between them and feels that being invited to her party last night was a huge step towards reconciliation. In the brief time they spent together, he felt their chemistry and is hoping he gets to see more of her soon so he can show her how much he has grown, changed and matured since they were a couple.”