In June 2005, CoCo’s engagement with Canadian businessman Bruce Rockowitz was made public, apparently having taken place some months earlier. Despite their 18 years gap, Coco’s mother approved the marriage. Before her relationship with Bruce Rockowitz, Coco has been rumored with the Taiwanese singer Wang Leehom.

As of 2007, CoCo Lee has yet to break the U.S. market with a big smash hit single. Although both her English albums have sold modestly, regular airplay and recurrent airplay by radio programmers is still lacking. This is the main reason she has not been as successful with her English language output. Her moderate hit single, Do You Want My Love, remains popular at discothèques and various internet radio stations. Her most recent English single aimed at the North American market is titled No Doubt, the lead single from the album Exposed. Once again because of lax programming on radio station playlists, this single was ignored by radio. The singles have become chart and video television hits in Hong Kong and Taiwan among other places. The second single from Exposed is the song So Good whose music video is increasingly run on Hong Kong and Taiwanese MTV. Coco’s follow up album to her C-Pop hit album Promise, titled Just Want You, features the hit single Hip-Hop Tonight with Vanness Wu, which follows in the same vein as No Doubt. The album Just Want You was released on September 22, 2006. The second single from the album was The Ninth Night, followed by the third single Love You At 85 °C and the final single, Dangerous Lover.

Coco Lee returned to San Francisco bay area for a live concert at the Shoreline Amphitheater on September 22, 2007 with special guest Alex To. It was her first live performance in her hometown in several years.

In 2008, Coco was chosen to sing one of the Olympic songs, Forever Friends opposite Sun Nan.

“I really idolize everything my sisters do, so I went into singing contests and won also. That’s how I really got into singing.”

“People liked my voice so much, it was so different. I also combined the R&B feel with the pop music of Taiwan. Everyone there used to sing really conservatively – they sing to the melody and that’s it. The music just sounded so dead. I wanted to bring the R&B flavor and other Westernized sounds to my music, because that’s the type of music I grew up listening to.” (about her Asian audience)

“When I work, I work. I don’t think about anything else. I just wanna get the work done. And I’m a perfectionist.

“They cannot imagine what I’ll sound like. But always when I’m done singing, people are very surprised.