Thanks for writing in. This is a great place to share your feelings and ask questions.
It is not unusual for you to be reluctant to make any kind of a commitment to a relationship at your age. Your life is moving forward and you never know where you will end up or who you will end up with.
It seems better to spend some time thinking about the qualities you look for in a guy. Perhaps, the way he dresses, the comfort at which you can talk with him, if he gets along with your friends and introduces and includes you with his. You may value good manners, honesty, academic ability or athletic skills. As you get to know him, you may want to know if he cares about his family and what his spiritual values are.
It is things like this that will help you feel more comfortable and confident when you do choose to make a commitment to a relationship.
You mentioned having a reputation of being "easy". Hopefully that doesn't mean in a sexual way. That is not a good reputation for anyone to have. It is not healthy physically or emotionally and extremely damaging to your self-confidence and self-image.
Stay in touch and let us know how you are doing.