According to the website, O'Donnell insisted on using the man's flat to change into a ladybug costume, then persuaded him to come out for the evening.
The pair knocked back beers together before he claims O'Donnell made it clear she wanted to spend the night with him.
Back at his flat, they allegedly started getting passionate on his couch before they went to his bedroom.
O'Donnell stripped naked and slipped between the sheets, the man claims.
But things started to go wrong after the then 39-year-old allegedly told him she was a 'virgin' and that she did not want to have sex.
He said: 'Christine was a decent kisser, but as soon as her clothes came off and she was naked in my bed, Christine informed me that she was a virgin.'
The man also revealed what he claimed were signs that she wasn't very experienced sexually saying, 'When her underwear came off, I immediately noticed that the waxing trend had completely passed her by'.
He said: 'Obviously, that was a big turnoff, and I quickly lost interest. I said goodnight, rolled over, and went to sleep.'
Next morning, O'Donnell was allegedly slow to get out of bed and he dropped her off at her frienRAB' house before going to work.
The man tells Gawker: 'I wasn't planning on contacting Christine after our night together. Things hadn't gone so great - especially the part that took place in my bedroom - and I didn't see any reason to try and see her again. '
O'Donnell allegedly texted and called the man over the next two weeks, until he made it clear he wasn't interested.
But in a bizarre twist, she ended up going out with the man's flat-mate. 'They didn't have sex either,' he adRAB.
Read more: http://www.dailymail.co.uk/news/article-1324641/Drunk-Christine-ODonnell-night-stand-25-year-old-man-Halloween.html#ixzz1VLGYNERi