Interesting prop bet with a friend.

[tvta]

So my buddy that has never had sex (24 yrs old) and never has ever had much confidence with women laid (pardon the pun) me 20-1 on him scoring with this girl next weekend. 20$ has been decided the bet. i would like an opinion as to what my max odds are here.

some back ground info. she isnt a hoebag by any means and it took her several weeks to have sex with her last boyfriend, who happend to be (not being gay) a fairly attractive freind of mine. he just recently went to stanford for civil engineering graduate school, so hes no loser. in addition, she has a history of being a complete nympho when she has a boyfriend (as in 5x sex a day, no joke). so my logic is that she wont want to break anyone in bc it will be a total disappointment.

do i have infinite odds here? should i up this bet to 50$?? he is my freind so i dont want to completely take advantage of him, but at the same time he is practically giving me money here.


i know this all sounds bad so please try not to just flame this post. im completely new to prop betting so i would like some constructive feedback.