So I think that while you feel sad and alone, you are not the only person who is a 20 something year old virgin. As the guy above said. I know it may be terribly hard, but you might consider leaving your comfort zone. If you don’t go out to parties it may not hurt to try going to a bar once in a while. You could potentially meet a female or even some friends there. By no means should you abuse alcohol, however. I am in no means a specialist with social issues but I promise there are people who not only care, but will hang out as well. Life will pan out. You just have to trust in yourself. You seem extremely strong with your values and any girl would be lucky to have someone who has such a strong core and value set.