Responses
I think the answer is on pages 21-22, Lily plays on Alex mind and confidence. First she says that Cole made a bet to whether he could sleep with her or not ( an issue of trust since Cole had told him to sleep with girls if he could not satisfy him) and then she states that Alex is going out with a gay man (so Cole is the only man for Alex, but it does not mean that Alex could be the only man for Cole)
Can anyone explain why Alex is miserable? Is it because Cole is not getting jealous or he wants to breakup or something else?