PGA Star Collin Morikawa Engaged To GF Katherine Zhu, 'My Forever And Ever'

Cuffing season is officially upon us -- golf star Collin Morikawa just popped the question to his gorgeous girlfriend, Katherine Zhu, this week ... and she said YES!!!

The 2-time major champ and the former Pepperdine golfer -- who have been together for years -- shared the news on Wednesday ... revealing they got engaged on November 30.

24-year-old Morikawa dropped to one knee right before the Hero World Challenge in The Bahamas, which kicks off Thursday.

"A lifetime together forever 🤍," Zhu posted on Instagram ... while Morikawa said, "My forever and ever, I love you."

The guy did a great job picking out the ring ... as Zhu was clearly excited to show it off in their first pic together as an engaged couple.

Of course, Morikawa has had a pretty remarkable start to his career ... racking up 5 PGA Tour wins since turning pro in 2019.

In fact, he made 22-straight cuts to kick off his career, which is only second to some guy named Tiger Woods.

A huge finish in this week's tournament could propel Morikawa to the top of the world golf rankings, as he currently sits at #2.