Don't give up yet. That just starts a cycle. I've been there. When we feel hurt and angsty we take it out on those who haven't done anything to deserve it. But in turn it hurts them, and they think, "Well this is pointless", and give up hope, so they don't give anyone else a chance and shut out everyone. It starts a cycle of hurt and mistrust. Trust me, it hurts you more than others to shut people out.