I read a novel, in this story, there is a difficult sentence I couldn't understand.

[quote=丁岩也只是淡淡一笑，不再说这个心知肚明的话题，在这个圈子里，曾前安男女通吃的爱好又有谁不知道？][/quote]

Thank you very much.

丁岩 = name of character in novel.
也只是淡淡一笑 = also only smiling slightly?
不再说这个心知肚明的话题 = Don't talk anymore about this topic which is already being understood.
在这个圈子里 = in this circle
曾前 = already have done so previously
安 = according to
男女通吃的 = what's considered "loving both men and women"
爱好 = what someone favors
又有谁不知道？ = and who doesn't know?