>>2629812If only life was that simple!
You can be whatever you want to be, but trying to be "straight" and then doing this with another guy could fuck you up mentally in the long run, because chance are, you won't want to just do it once, and chances are you're gonna want to taste dick at some point, and maybe even start to get curious if you like it in the ass (or even get curious if fucking a guy's ass feels as good as us tops say it is).
In my opinion, stop worrying if it's "gay" or not. Not only does no one really give a shit anymore if you're gay, but "bisexual" is still a totally valid option if you're attracted to both sexes.
But, if you care about your GF and actually love her, you better start getting this stuff figured out. If you are bi or gay, you owe it to her to be honest and not drag her heart through the mud. And crazy as it sounds, some bi men are able to keep their GFs and are allowed to still have time with the boys, without wrecking the relationship (I don't really get it, but it happens).
And, in terms of your own mental health and long term wellbeing, let me tell you that you don't want to waste your best years being something you're not and missing out on opportunities you may never get again. So, the sooner you figure out what you really want, the better.