Sometimes they are seeking only friendship, but more often than not, they are indulging in extra-marital affairs and infidelity.
In some cases, they may be in open, or polyamorous relationships where dating outside the relationship isn’t considered outside the boundaries.
Adult Friend Finder is eager to find you a hot date.
However what I would say is that most of “the profiles” on there do seem genuine and to have real, ordinary people behind them (you don’t get the feeling of it being packed with model-like airbrushed photos).
Like a lot of other “adult oriented sites”, most of the males on there create free accounts and act like “horny teenage boys”, trying to get laid.
The layout also seems a “quite busy”, and could do with being a bit easier to get around.
The plus is that their apps are well designed and let you get updates on the move.
So, because there’s a demand for it, married dating services do exist.