No, you’ll only be banned if you continue to make harassing replies as you did on that post. Nowhere in that person’s post did he state that he was gay and you, out of nowhere, drew that conclusion and continually harassed him for it. I suggest if you don’t have anything helpful to offer a user that you not reply to their post.
Please refrain from making replies like the ones you did on this post http://help.com/post/547593-well as they are not appreciated nor acceptable and can result in your account being banned.