Harmonize and his girlfriend Poshy Queen have blocked each other on Instagram.
Poshy has also deleted all photos of the Tanzanian singer from her Instagram feed.
This comes just two days after they stepped out together at a football event where Harmonize was performing.
In June Harmonize had shared his intention to settle with Queen.
"To be completely honest with everyone, I am very confident in telling anyone that I love Poshy Queen very much. And I say this aside from just being happy; you know we have been together for over 6 months now."
"Besides her 'assets' and everything, I love her deeply because she has come and changed my life overall. I am a new person now, I am thinking about children, the drive for success has been her effort, and even that project I did, she came up with the idea to advise me to create an album about the president," Harmonize said.
"For now, we have moved past the talk about 'assets,' we are friends, we talk about the future, about children, and sometimes we enjoy ourselves, go out and have a glass of wine, and more importantly we talk about life, success - we really want to be wealthy, so I can say she's like my wife, aside from 'assets' and other things," he added.
Before Poshy, Harmonize was dating actress Fridah Kajala before irreconcilable differences split them apart.
Prominent Kenyan athletes who've died in the past