The 44-year-old rap mogul and businessman posted a picture of a huge diamond ring on Instagram over the weekend, reported Contactmusic.
"Baby do you like it? I just want to get you what you Like !I just wanna Mk you smile :) takeDat! (sic)," he wrote next to the picture of the huge rock .
Ventura replied, "It's definitely smiling. Its perfect!"
Ventura, 27, is a singer signed to Diddy's Bad Boy records as well as a model who has appeared in campaigns for many brands. She has released two albums, Cassie in 2006 and RockaByeBaby last year.