I found him very believable but anyone’s opinion outside the case is really irrelevant. There are going to be a lot of people looking very closely into this from now until draft day.
The simpliest explaination is usually the correct one.
“Simple” tells me this guy knew this was a hoax, at least at some point long before 3 years had expired. Why, now that’s a bit more complicated, but back to “simpliest”, he obvilously has some issues with real females.
If indeed he is devoutly religious, maybe the pretend kept the virgin teasing at bay.