Patrick Dempsey McDreamy Headed for Divorce Court No Prenup

1/23/2015 4:52 PM PST BY TMZ STAFF
We just got a joint statement from Patrick and Jillian, saying, "It is with careful consideration and mutual respect that we have decided to end our marriage.  Our primary concern remains the well-being of our children, and we ask with profound gratitude that you respect our family's privacy at this very sensitive time."
update_grey_gray_barPatrick Dempsey
is headed for the single life but it's not his doing ... we've learned his wife has filed for divorce, and 10s of millions are on the line.

Jillian Fink filed for divorce, citing irreconcilable difference. Fink, who is repped by disso queen Laura Wasser, is asking for joint custody of their 3 kids, a 12-year-old girl and 7-year-old twin boys. She also wants spousal and child support.

We've learned they do NOT have a prenup. Patrick is reportedly worth around $40 million.

The couple has been married for 15 years.  

Sources connected with the couple tell TMZ ... "it remains to be seen whether it will be amicable." Sources tell us she's had a problem with his ego for a while now, which she thinks is out of control. As one source said, "She's all about the kids."