Talento and former Morning Musume member Mari Yaguchi (27) is in a relationship with actor Masaya Nakamura (24), it was learned on Tuesday. Yaguchi has already confirmed the news on her own blog. The two met around the start of this year through a gathering organized by a mutual friend, and they hit it off right away. A source close to Yaguchi said that their meeting was like love at first sight..