Opinions please

I am a straight guy, but I think about guys sexually. There is a guy at work that is gay and we are friends. Would it be a bad idea to talk to him about this? Or try to talk to someone else?I'm worried that I will regret it but at the same time I'm attracted to him and curious to see what happens.No, nobody else knows about me having these thoughts, but I'm pretty sure that he might suspect it though because I do kinda flirt with him. I'm just worried that it will be bad once someone I know actually knows what I'm thinking.And I have no intention of coming out to everyone, I'm still not ready for that. I'm still attracted to women. I just like certain types of guys.