Former 24 star Elisha Cuthbert has split from her ice hockey player boyfriend Sean Avery, according to media reports. The couple started dating in 2005 after the blonde actress ended her engagement to Trace Ayala - best friend and business partner of Justin Timberlake. Friends of the couple tell the U.S. edition of OK! magazine that Cuthbert ended the relationship several weeks ago. A pal says, "She's a serial monogamist, jumping from one relationship to another."