Jason Momoas and Adria Arjona Getty Images (2) Jason Momoa finally revealed that his new girlfriend is Adria Arjona, who has also been in the acting business for quite some time. Momoa went Instagram official with Arjona in May 2024, after revealing that he was "very much in a relationship" during Basingstoke Comic Con in the U.K. earlier that month. "Japan, you are a dream come true you blew my mind," Momoa captioned a series of photos, also tagging Arjona.