
Ok. So uhm I guess what he meant was that he never considered his previous penetrations as "sex" because he didn't really want it. Hence, as he said, "pseudo-sex".

Maybe he really meant it? that he never had sex, and the only time where there was a penetration was a gang rape. So when he told him that he never had real sex he hid the fact that he was raped (because of the mood and that he didn't feel like telling him directly after their reunion) and never again did he have real sex after the rape and waited for the right one?
That's how I understood it, don't know if I'm clear

The thing I like the most about this is the overall sadness of love it conveys. More than usually, sadness in yaoi is a result of being sexually harrassed or raped. That's sadness from fake love. Given is different. Given portrays sadness which you can only feel because you have truly loved someone.
PREACH XIAOYI PREACH.