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PaulA
Since: Jan, 2010
2016-05-29 23:28:32
You could try checking the Utopia and Fish out of Temporal Water pages to see if anything rings a bell.
Jcatgrl
Since: Oct, 2009
Jcatgrl
Since: Oct, 2009
Jcatgrl
Since: Oct, 2009
TheFanguy123
Since: Feb, 2016
Jcatgrl
Since: Oct, 2009
Unsung
Since: Jun, 2016

The book I'm thinking of is a scifi novel where the protagonist, who I believe was thought to have died in some kind of accident in his present day, was somehow actually transported forward in time. When he became aware of himself again he was in the middle of a snow storm, and was rescued by a woman who took him back to her house. At that point, he finds out that casual nudity is A Thing in the future. The woman, for reasons I can't remember, decides to give him a picture of herself, specifically, a headshot, which is described as being more personal/intimate, and kind of a weird choice for someone you only just met. She continues helping to introduce him to the future, and takes him out shopping. There's a description of moving sidewalks at different speeds, and at one point he takes notice of a muscular female massage therapist, who he describes as wearing nothing more than a bored expression.
Later in the book, he becomes jealous of the woman's current or ex-boyfriend, and is coerced into going to some kind of mental institution where he is "treated" by having all jealousy trained out of him because nobody is monogamous any longer so romantic jealousy is regarded as a type of mental illness. The entire society is basically treated as a utopia by the people in it, but not by the protagonist, or at least, not at first.