How is Karim's sexual confusion demonstrated at the second gathering at Eva's that Haroon speaks at?

Karim demonstrates his sexual confusion by strongly denying his attraction to Helen - particularly when she is close in proximity to him - and focusing on thinking of Charlie. He is also is unsettled by Eva and Haroon showing a level of intimacy in public and doesn't know how to deal with it, pushing it to the back of his mind to deal with later.