Luka Donu010diu0107 didn't get a ring this year ... but his girlfriend did -- 'cause the Dallas Mavericks star just proposed to Anamaria Goltes in Slovenia -- and she said YES!!!
The NBA point guard and his new fiancee revealed their engagement in social media posts on Friday ... showing the basketball player got down on one knee at Lake Bled.
"ud83dudc8du2764ufe0f 7.7," Doncic captioned the pic.
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LeBron James was one of many who were stoked for the hooper .