Here's a little situation that I'm going through right now. I have had sex with both sexes for a few years now and I thought that I was bi. But, over the past few months, I have become less and less interested in sex with men. Recently, it's been harder to cum when having sex with men. I end up just having to jack myself off at the end to finish the job. Just yesterday, I fucked someone and I couldn't cum, no matter how hard he tried. In the general sex sector, I am finding it harder to really get into the act and feel like I am putting my all into it. I don't feel like I'm forcing myself to do anything, but it just doesn't feel as great as it used to. I have always identified myself as someone who is willing to have sex with men, but only fall for women for potential relationships. But the male half seems to be slowly dwindling. I still can find some men hot and I enjoy watching gay porn but I am getting less and less into actually doing the sex act myself. I realize that this is something that a lot of people go through, but I wonder how many people, both male and female, have gone through this as well. I am not saying that I am eventually becoming completely straight as I don't know what the future holds. I also put into consideration is that some bi people sometimes go in and out of the desire to have sex with the same sex.