Looks like Yannique Barker was recently photographed with Brooke Hogan.
Stack$ is Yannique Barker's stage name. He was film school student when he decided to follow his musical muse, and he has been a rapper ever since.
Brooke Hogan is the daughter of Hulk Hogan (which is the "stage" name of Terry Bollea). She has her own TV show Brooke Knows Best which is a spin-off of her father's reality series, Hogan Knows Best.
Are the two romanttically involved? They were photographed walking hand-in-hand. It should also be noted that Yannique Barker appears on Brooke's new album as Stack$.