I’m finding out from this that it’s owned by the same company but Hinge has a better formula for that kind of thing. You comment on an aspect of their profile (a picture, their response to a prompt, etc) and that gets sent to them. Then they can reply (which triggers a “match”) or not. You can also send likes without a comment but obviously that won’t be as effective.
Personally I’ve never liked the idea of NSFL. It just doesn’t feel like it has the eighth connotation, it’s wording feels like it’s meant to be a joke when it’s content is rarely funny. I think just using “Gore” or “Death” would be absolutely better.