If she - my true love - whoever she now is - wants to, I would most certainly not mind a civil marriage (if that's what it's called, in English, when you just go to the court to get it done), without any guests present, but I don't find marriage sacred in any way. Rather, it'd just be good to marry for the convenience it may bring if you travel, or if the other has to be hospitalized, or similar. I have my own rituals that are infinitely more sacred than any marriage ever could dream to be. However, it'd be nice if we'd both share the same last name, especially considering the effort I put into changing mine.
Are you into BDSM and if so, why? If you are not, then why not?