Stopping my gay nightmare?

I will say that there is nothing wrong with being gay or bi so be proud of which ever one you choose and embrace this. As for your dreams going away I have to agree with Rachel that there is no guarantee just because you accept this that your dreams will go away however once you accept your sexuality this could be a huge help in leaving your mind more at ease. A mind that is more at ease tends to have a better nights sleep and thus I would say this could help so you have less of your nightmares.