I'm looking for the title of a sci-fi book I read a while ago that I simply cannot remember the name of, nor where I read it.
In it the main character lives a relatively happy life with his wife. One day he is abducted and dumped in a remote location; he eventually makes it back to his house only to find that his life doesn't exist any more (either his wife is long dead or has been with another man for years, I can't remember).
He starts investigating and it turns out that he's been taken to a parallel universe by another version of himself--who has found some technology to travel between these universes--so that this doppelganger can steal the original's version of his life and be with his wife.
The main characters eventually finds the people who have made this technology, composed of a door-like portal, and goes on a bit of a tour (I think with another woman?) and ends up in an alternate Earth that's completely frozen and the two of them almost freeze to death.
I think that's about all I can remember about the book itself...
I read it perhaps two years ago. I am pretty sure that it's quite a recent book (probably after 2010). It was in English (in the UK, if that helps).