How can i output my content in pairs?
I would go with Twigs batch filter, which exactly solves your problem.

Here an an adapted example:

{% set items = craft.entries({
    section: 'events',
    level: 2
}).find() %}

{% for row in items|batch(2, 'No item') %}
    &lt;div class="row"&gt;
        {% for item in row %}
            {# Your entry #}
        {% endfor %}
    &lt;/div&gt;
{% endfor %}