Reunited. Kylie Jenner appears to be jumping headfirst into her rekindled relationship with . The actuality star, 18, posted a trio of pics with her on-once again boyfriend on Snapchat on Tuesday, June 28, that showed her cozying up with the "Rack City" rapper, 26, and providing him a kiss on the cheek. The affectionate photograph booth pics seem to have been taken at Khloé Kardashian 's birthday celebration with the Kardashian-Jenner clan at Dave & Buster's in L.A. on Monday night. The shindig capped off a weekend of togetherness for the pair, who are moving so fast that Tyga is even crashing at Jenner's new L.A. residence. "They are officially back collectively and he is staying there with her," an insider tells Us Weekly. "It's up in the air if he is going to dwell there completely or is just staying there for now." And for the time being, Jenner's household isn't chiming in on the new living circumstance. "Her family doesn't care because they don't think it will last," the insider continues. The lipstick queen, who split from Tyga in Could. brought him along as her date to the premiere of Kanye West 's NSFW "Popular" video at The Forum in L.A. on Friday, June 24, the place they have been seen holding hands. Earlier that day, Tyga had posted and then speedily deleted an Instagram photo of the Retaining Up With the Kardashians star sitting on a bed in a skintight dress with the caption, "They often come back ... ." She posted a equivalent image to her account, tagging the rapper on her bottom. Kylie Jenner Opts for No Makeup on Date With Tyga Here's What Absolutely everyone Wore to Khloe K.'s Birthday Bash 'KUWTK' Recap: Tyga Dishes on Blac and Rob's Engagement The PDA came just 1 day soon after she was pictured acquiring hot and heavy with rebound man PartyNextDoor in his sexy new video for the track "Come and See Me." Tyga and the reality star's reunion continued on Saturday when they have been noticed at L.A. hotspot one Oak, and the rapper chauffeured Jenner in the $320,000 white Ferrari he'd gifted her for her 18th birthday. "They were together the entire evening," an insider informed of their date night. "Kylie was hanging with Tyga and dancing all around him. She wasn't hanging with anybody else. They absolutely looked back collectively."