The actress' publicist confirmed the news to AP, saying ScarJo and Colin are officially engaged, but made a note that no wedding date has been set yet.
This would be Scarlett's third marriage -- she was previously hitched to Ryan Reynolds from 2008 to 2011 and was then married to journalist Romain Dauriac, with whom she shares a child. For Colin ... this would be his very first trip down the aisle.
Colin and ScarJo have been going strong since the spring of 2017, when she made a guest appearance on the season finale of 'SNL.' What many people thought was a one-off turned into more and more dates, and eventually ... a full-blown relationship.
The couple was just spotted down in Argentina this past December, and it sure looked like things were getting serious at the time. Turns out ... they were.