You might ask why they are newly interested?
Nowadays "round my way" it's generally because they are vulnerable, lonely and miserable at best - or cuckoo, vulnerable, lonely and miserable at worst.
What appeals to these people is the interest shown in them, along with the "certainty" and the "love" from outwardly normal people.
So they sit through crap and soak it up. Some see through it, some leave and some surface at every crisis only to disappear again later.