From fandom I can guarantee you that a large number of women also read gay romance. Of those that did (many sociologists among them means endless questionaires and polls), 1/3 were happily married, 1/3 single, and 1/3 gay.
I haven’t read a gay romance but I would, if it were about men. And well written. I really get the creeps from lesbian romance even with lesbian friends. I guess it’s like how straight men think two women together is sexier than when they picture two men going at it. It’s just how it is.