Cynthia Blaise

Keegan-Michael Key is officially a single man ... but it's gonna cost him boatloads of cash. According to docs obtained by TMZ ... Keegan's gonna have to shell out $34k per month in spousal support to Cynthia Blaise and he'll have to kick in an additional 21% of his gross income on anything he…

Keegan-Michael Key's estranged wife says his ending of their 17-year marriage was so unexpected, it's causing her serious health problems ... in addition to leaving her in financial ruin. Cynthia Blaise says she's suffering from severe depression, anxiety, hair and weight loss and PTSD ...…