The 44-year-old British director is engaged his longtime girlfriend Jacqui Ainsley, a source confirms to Us Weekly.
PHOTOS: Hollywood's hottest dads Ainsley, 30, showed off her diamond ring during a dinner date Sunday at Madeo restaurant in Los Angeles.
Soumahoro hails from the Ivory Coast of Africa, and is nicknamed Brooklin by his friends.
Friends of Madonna say she is absolutely smitten by her latest boy-toy.
The pregnant model flaunted her growing baby bump, and what appears to be a huge round-cut sparkler.
In July, Ainsley revealed she and Ritchie were expecting their second child together by proudly showing off her baby bump on the red carpet of London premiere.
Styler had seen The Hard Case, and decided that co-funding the project would be a worthwhile opportunity.