I’m NOT a pedo but…

I love erotica based in “olden times” where under-18 girls are married or kidnapped or whatever by adult men who teach the helpless and innocent captive about BDSM.

I’m interested in finding:
1. Similar stories based in more modern times (i.e. post-industrial revolution).
2. Stories where the helpless and innocent captive is a BOY instead of a girl (in any time period).

I prefer stuff I can read on my Kindle or webpages I can bookmark. But any suggestions are welcome.

Thanks!