In the movie The Time Traveler's Wife, shortly after Henry meets Clare for the first time, Clare spends the night at Henry's. Following morning she finds a lipstick in Henry's bathroom, and when Henry comes in he explains it by saying "I'm not doing that anymore/It's in the past" (something along those lines, not a direct quote).
In another scene he's dressed up as a drag queen. No explanation is given, and I haven't had the chance to read the book. So I'm wondering, what does it mean? Is/was he a transvestite?