How to let go of my fear of getting hurt?

im about to start my junior year of high school and i've never really had a boyfriend or my first kiss. everyone says they don't know why because they say im really pretty.(not trying to toot my own horn) i think i cant really get a date or a bf because my parents marriage was over when i was 7 but they stayed together till i was 14. i don't want a relationship to end up like there's. my friends say i'm afraid of that so i don't let people get that close. all i want is someone who makes me fee safe and i can be myself with. i'm only myself with my BEST friend. like i don't even know if i'm attractive (not trying to get compliments) i don't know what to do or how to let go of this fear. i'm so scared of being alone for the rest of my life.