not in real life but the one on the show (like anyone thinks it was his real sister). 

Dexter star Michael C. Hall and co-star (who plays his sister) Jennifer Carpenter secretly married in Big Sur, California on New Year’s Eve!!

The two have been dating for a year and a half and the wedding was so secret their family and friends were not invited!!

The couple will make their first public appearance as husband and wife on Sunday at The Golden Globe Awards.

Am I the only one that finds this a little on the creepy side??  Do you watch the show?? 

WENN.com