Doom crossover with Jim infected through sex?

[bluetoads.livejournal.com]

Hello, I'm looking for a Doom reboot crossover. Reaper!bones an Jim are in a relationship and Jim gets infected with C24 but  not in the usual way. Every time they have sex Jim gets changed a little more. so it's gradual and neither notice the changes till something happens-maybe Jim got hurt and healed fast, sorry just can't remember. I do know it was a shock to Bones as he had no idea he could infect someone like that. It may have been special circumstance.  I thought it was 'So shall you reaper' but it's not. Anyone know this one?