im looking for this yoai i read awhile ago and forgot the name of it but it went like this, this guy liked this girl but when the guy was out he noticed the girl he liked go into a hotel with a older man. and like something happeneds and the boy goes to the older mans work and they talk and the older guy said he would stop doing things with her if the young boy did things with him instead so they went to a hotel together cuz he agreed and they had sex.

so like at the end of the story the girl comfronts the boy and said that she never had sex with the older guy cuz she knew he wasnt into girls like that or something. Hope thats enough information.

It sounds like the oneshot extra called "Saved" in the series "Yakuza in Love" by Kano Shiuko.