Searching tags related to this theme, it's mostly dominated by yaoi titles, so curating a list of non yaoi smut titles, with situations such as:
- Blackmail
- Debt
- Pushy leads
- Direct force/assault
- Forced prostitution
Part 2: https://www.mangago.me/home/mangalist/2220848/
The type may be noted on titles later if there's time, but no reviews or comments on quality or rating.
(Usually) men turned on by their wife, gf or crush being with someone else. May also have dub/noncon or other dark elements. !Warning! This is often a hidden plot twist so if you dont want spoilers, back out now unless you're searching for more of this goodness. For me, discovering one always feels like christmas!
This theme often goes with ntr/netorare (shocked to be betrayed but surprised to be turned on) or netorase (their kink).
Other NTR list: https://www.mangago.me/home/mangalist/2130423