That was unexpected...
[SPOILER ALERT]
But something in me trusts the main girl and I honestly believe that she will fight her biological urge, and end up together with the club president :)
I guess I'm kind of an optimist, but I read this story as "love" outweighing "attraction." It's okay that the president is a beta, for to the main character she has a heart of gold, and the main character has become determined, no matter what, to become soul mates with her. It ended on a good note for me, and I think it's empowering and endearing.