First: No, it doesn't bear any reflection on your sexual preference. It's simply shared eroticism. Second: Does it really matter? If you enjoy it and it's not hurting anyone...
To some it would to others not and as people have suggested sexuality is a continuum, there are no clear demarcations other than for those that absolutely know that they are homo or hetro sexual and could never be otherwise.
The real question is, does it make you happy and do you enjoy it? If you do, does it matter what the label would be?
I don't think anything is "gay or bi" unless sex takes place between two or more people of the same gender. Doing things on a computer, whether with the opposite sex, or the same, is a completely different thing than engaging in sexual acts.
Are you only sexually and emotionally attracted to men? Yes? You're potentially gay. Are you sexually and emotionally attracted to both men and women? Yes? You may be bisexual. Guess what, it doesn't matter though. You're just chilling at home masturbating with a sexual person on the other side of a screen. Not sitting there with a cock down your throat.
Lol mitts answer is funny. As far as labels call it what you want but it doesn't matter . Don't want to call it " the sex act that shall not be named ". Anyways if you enjoy it do it. No matter what you call it someone will call it some else. I don't think it's gay when I've had had my cock in my girls pussy while getting more and more excited watching her suck another cock but others may call it gay. Whatever