I find it extremely puzzelling that so many men can speak on behalf of all lesbians in this thread, when I as an actual lesbian am completely oblivious about other peoples relationships.
So much, that I can only answer the question by describing my own relasionships with men:
The first guy is my best friend, and I'm his best friend. Unfortunately, due to his marrital problems, he has become more interested in me, than he should be. It's to the point where I'm uncomfortable having him sleep at my place after we've been out drinking (which he always does). Not that I'm afraid that it will escalate into assault at all, but he's recently behaved in a way that he himself is very emberassed about, in the following days. I don't know how to have that conversation with him.
Other dude is the second straightest guy I know. Some years ago, when he was having marital issues, he made a pass on me and told me he was in love with me. Leaving the details out, we didn't talk for almost a year because of how he handled that, but have since patched things up, and are probably now even more close.
The straightest guy I know is just fucking awesome. I wish we were closer, but we're good friends. He's really comfortable with himself (to the point that he'll make out with other dudes, just for the hell of it), and it's so easy being comfortable around him. I can't imagine him ever making a pass on me. I can't imagine him ever wanting to make a pass on me.
Last dude is the boyfriend of one of my best female friends. We both want to, and are actively trying to become better friends, but it's difficult, seeing how his gf is almost always there. I do get the destinct impression that he thinks I'm his best bet for having a threesome with his gf. I don't think it comes from a place of disrespect though, I think it's because I'm his best bet, when it comes to having his extremely straight gf be with a woman.
Few dudes from work, who I really appreciate. I especially appreciate how clearly they backed off, when they found out I'm a lesbian. It went from some attraction to absolutely none in like 5 minutes.
We did have a akward moment when one of them asked "so how does lesbians have sex". But that one was on me, seeing how I at first didn't realize that he was really just asking for general tips on going down on women.
Conclusion: I have many male friends. In general I feel very respected by all of them, and I respect them all. There are of course hick ups, but I don't think that's abnormal. It's just human interaction.
Now, if some of you dudes could think of me as a human, in stead of putting me in the category of lesbian, maybe we could be friends too?