Girls are wonderful. No need to give up on them. A relationship should not be something you need to achieve, but something that helps you reach higher things in life. Try to have as much fun as you can in life, and see if you can find ways to share it with others, girls included.
But anyway, don't sweat it. Girls, relationships and sex are not that big of a deal as you may think they are. They are just another part of life that teaches us more about ourselves while having fun along the way.