I always thought Diana, but the line "on that cold winter's night, my pride was slashed away" kind of goes against that, seeing as she died in August.
There was a theory that by "cold winter night" when his "pride was snatched away," he meant the day of the strip search, which happened in December 1993 (if I remember correctly). Those lines are sequenced in a weird manner, hard to say for sure.
Yes, this is what i believe too