She's only 2 years older and took my virginity when I was 14. During our lives we continued to have occasional sex, mostly when we aren't in a relationship. This was the case, I was feeling down because my last girlfriend had left me after 5 years being together, and when I feel like this I normally call my sister, who, after many frustrating relations decided to stay alone. She told me to go and stay with her for a few days, I knew it would make me feel much better, and it really did.