Now and Then by William Corlett
Very well-written. I liked most of the supporting characters, except for TG (who was plain offensive, although perhaps that's the point) and the narrator's sister (something of a Petunia Dursley sort of character, if you get the reference). Chris broke my heart a little, and I'm not sure I understand Stephen; at best, I'm tempted to think Stephen said he loved Chris because it made what he was doing less obviously manipulative. Maybe it's the difference between loving someone and being in love with them? I'm sure I don't know.
The way the narrator, in the "Now" sections, seems to be completely emotionally detached resonates, in a way. The "Then" sections flow better than the "Now" ones, but for the most part are bittersweet and in at least one part heartbreakingly painful.
I enjoyed this, and recommend it.