Jaime King is engaged to investor Austin Sosa, and "is very close with his family," a source exclusively tells PEOPLE.

"All I want to be able to do is say as a dad, I did everything I could to give the best chance of finding him," wrote Brian King-Henke, vowing to bring Austin home.

Henke, the father of a Minnesota native who went missing in Yellowstone last fall, announced on July 6 that the search for his son, Austin King, will resume later this month.

Austing King, 22, was last heard from on Sept. 17 when he reached the summit of Eagle Peak. The search is now being scaled back, the park said on Wednesday.

Jaime King is walking down the aisle again! After the actress was spotted in West Hollywood, Calif., with a diamond ring on that finger on Monday, July 7, a news outlet confirmed King is engaged to ...