Sorry if this has been done. Even before he got into the vigilante shtick, Matt's relationships seemed to have been intense but short lived; what if the women (and/or men) in Matt's life couldn't keep up with the extent of his masochism? (ps, I quite love how the whole fandom seems to agree that Matt is the subbiest sub who ever subbed...)
Matt's failed relationships...(Bdsm, masochism)