Husband keeps proposing to me even though we're already married?

And I keep saying yes, but I'm running out of room on my finger for the rings.

Update: I asked him more firmly about it and he revealed that it was a scheme. He says we're now married 14 times, or as he put it, "14 layers deep into marriage" (a quattro-decima marriage) and if I ever left him I'd have to divorce him 14 times for 14 different reasons to leave him and get out of all the marriages. I'm looking up if this is legal but can't find anything saying two people can have 14 separate marriages with each other.

I do love him 14 times more than the average marriage but I'm worried for his self esteem if he thinks he needs to do this to discourage me from leaving him.

Update2: I got kinda' mad at him and he proposed again, likely to distract me, and I couldn't say no. So 15 layers deep now.