Would like help on improving my jQuery Validation code

Would like some assistance in improving my jQuery validation code. I have some repeated code, but I am not sure how to write it in a way so that I don't have to keep repeating the same code over and over again for different variable names etc... (such as the if statement part) My goal is to make it so that I can easily apply it to any other form I create.

Here is the jsFiddle

Javascript:

(function($) {

    $('.commentForm').submit(function () {

        var error = 'error';

        var name = $(this).find('.name')
        nameVal = name.attr('value')
        email = $(this).find('.email')
        comment = $(this).find('textarea')
        commentVal = comment.html();

        if (!(name.val() === nameVal || name.val() === '' || name.val().length < 3) && 
            !(comment.val() === commentVal || comment.val() === '' || comment.val().length < 3) && 
            validateEmail(email.val())
           ) {
            console.log('Form is good');
            return true;
        } else {

            (name.val() === nameVal || name.val() === '' || name.val().length < 3) ? name.addClass(error) : name.removeClass(error);
            (comment.val() === commentVal || comment.val() === '' || comment.val().length < 3) ? comment.addClass(error) : comment.removeClass(error);
            (!validateEmail(email.val())) ? email.addClass(error) : email.removeClass(error);

            console.log('Form is BAD');
            return false;

        }

    });

    function validateEmail(email) {
        var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
        return re.test(email);
    }

}) (jQuery);

Thanks for your help in advance!

UPDATE CODE: (SAME FUNCTIONALITY)

$('form.requiredFields').submit(function(e) {
    var req = $(this).find('.req'),
        validateEmail = function(email) {
            var re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
            return re.test(email);
        };

    req.each(function() {
        var $this = $(this),
            defaultVal = $this.prop('defaultValue');

        if ( ( $this.hasClass('email') && !validateEmail( $this.val() ) ) || (defaultVal === $this.val() || $this.val() === '' || $this.val().length < 3) ) {
            $this.addClass('_error')
        } else {
            $this.removeClass('_error req');
        }


    });

    console.log(req.length);
    if ( req.length === 0 ) {
        return true;
    } else {
        return false;
    }

});