husband attracted to manly lesbians

My husband is friends with mostly men at work and 1 woman. The woman is a "dress like a guy, buzzed hair cut, talks like a guy" type of lesbian. At first when my husband talked about her often I didn't think anything of it. But then I noticed, his fav characters in any movie or tv show was also the "butch" female. I've brought it up to him that he might have a crush on the lesbian at work. He blew it off like a joke and said he thinks I'm just being silly and a little jealous. That she's lesbian, why would he like her. He continues to deny his feelings for her. But he continues to talk about her with such admiration. At a moment of weakness I looked at his texts with her and it's always about car parts never anything inappropriate so I'm not worried in that sense. But I wonder, does this make him gay since all of the women he's attracted to look like men at a first glance? He doesn't like the feminine lesbians. It's only the manly ones. What does this mean?