Douglas/Martin, preferably in the beginning of their relationship, and only the first or second time they try something kinky. (Bondage, D/s? Love both in the right scenarios, but they can also get too intense.)

None of Douglas' partners has ever had to use his or her safeword before, so he's worried and confused when Martin does it. He stops, of course he does, but he worries. Just give me ALL the fluffy angst and comforting aftercare, please, it gets me even more than the kink itself does. *blush*