Please not with little kid!Matt - I'm fine with older teen Matt, or college/adult!Matt if you're uncomfortable with writing underage.
Years after Stick leaves Matt, one of Stick's enemies from his 'war' kidnaps Matt and plans to use him as leverage against Stick. Stick goes to rescue him.
Matt gets drugged by the kidnappers, and while beating up the baddies, Stick inadvertently gets dosed himself. It turns out that it's a sex pollen type of drug, and in his hazy mind, Matt starts to initiate sex with Stick and Stick can't help but respond (with a lottt of guilt on his part).
Matt/Stick, dubcon, kidnapped!Matt and drugged sex
Years after Stick leaves Matt, one of Stick's enemies from his 'war' kidnaps Matt and plans to use him as leverage against Stick. Stick goes to rescue him.
Matt gets drugged by the kidnappers, and while beating up the baddies, Stick inadvertently gets dosed himself. It turns out that it's a sex pollen type of drug, and in his hazy mind, Matt starts to initiate sex with Stick and Stick can't help but respond (with a lottt of guilt on his part).