Under no circumstance is it healthy or right to have an affair. That's bullshit if I ever heard it. You don't fuck around with other people when you're already in a relationship. There is no debate about that.

If your current partner isn't satisfying you, talk to them about it. If you can't have your needs met, then break up with them. Don't go fucking another person behind their back. I shouldn't even have to go into the reasons why, but among many other things, it's disrespectful and a betrayal of trust.

>>11, I don't know what kind of life you've been leading, but don't come here preaching that bullshit. It's not alright to cheat. It never was. It never will be. And like >>9 said, OP, you came to the wrong place. No one in their right mind would support you in your endeavors.