I have a secret

I never told anyone, i even blocked it on my mind, i didn't remembered it i just knew i was sad. Until having a boyfriend triggered it, i was sexually assault when i was about 6 years old by a classmate who was older. Now i'm afraid of any type of sexual act, i just can't, but i can't get myself together to tell anyone what happened, i lost my boyfriend for the lack of intimacy and i'm scared i woul never find someone because of that situation.