The YouTube star, 19, and musician Guthy, 23, got affectionate in a photo Guthy posted to Instagram over the weekend.
In the snap, Guthy smooches Giannulli on the cheek as she holds her cellphone in front of a mirror.
Guthy captioned the sweet photo, "Lil monkey I love you."
Loughlin and clothing designer Mossimo were accused of paying $500,000 to admissions scam mastermind William "Rick" Singer to get Olivia Jade and her 21-year-old sister Isabella recruited onto the USC crew team despite neither girl being a coxswain in high school. They pleaded not guilty to all charges and were hit with additional counts of conspiracy and money laundering; if convicted, they each face up to 40 years behind bars.
Olivia Jade and Isabella's statuses at the college were put on hold amid an internal investigation into the admissions scam. A recent report claimed Olivia Jade wanted to go back to USC, despite initially not wanting to go to college at all.
The beauty vlogger lost endorsement deals after her parents' arrests and was reported to have moved out of her family's Bel Air, Calif., mansion. She broke her long social media silence to wish her former "Fuller House" star mom a happy birthday last month.