The former star of The Practice met Thomas two years ago and they became friends before starting to date six months ago.
A representative for the star tells People magazine, "She's ecstatic. She's very, very happy."
The Men in Black II star wed Thomas in the garden of his home in San Antonio, Texas.
Boyle, 36, appeared on Showtime's series Huff, as the bipolar character Melody Coatar, and on the TV show Las Vegas, as the owner of a new hotel.
The couple went public with their relationship at the 1999 Emmy Awards and dated until the end of 2000.
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