Michaels, 49, had proposed to his on-again, off-again girlfriend of 16 years at the time during the December 2010 finale broadcast of Bret Michaels: Life As I Know It -- the rocker's most recent VH1 docu-reality series -- when he gave Gibson, 41, a recycled "promise ring" she had worn earlier that same year.
In July 2010, the couple had labeled the sparkler "a friendship ring with benefits," according to Michaels, who had viewed their relationship as a "work in progress."
Michaels and Gibson are parents to 12-year-old Raine Elizabeth and seven-year-old Jorja Bleu.
(Photo credit VH1)
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