Change of Heart by Linda Hill

At the age of 38, British supermodel Julia Westgate watches in panic as her career begins to decline -- and she realizes she is truly alone in the world. Deeply closeted, Julia has always limited her encounters with women to secret trysts and one- or two-night stands.

While on a shoot in Boston, Julia carefully disguises herself so she won't be recognized, then sneaks out to a secluded lesbian bar. There she meets local journalist Cory Hayes, who is celebrating the publication of a hard won story. After spending a passionate weekend with Julia, Cory is devastated when she wakes up to an empty bed.

Weeks later in a supermarket check-out line, Cory's jaw drops when she sees an exquisite face on the cover of a fashion magazine -- a face that looks more than vaguely familiar. Thus begins an all-consuming game of hide-and-seek, with Julia trying to run from herself and her uncertain future -- and Cory willing to risk everything to find her.