tw hard to overcome

Why is it so hard to move past the events of sexual assault? For me, it has been nearly 10 years since it happened but I still feel as if it was yesterday I was helping this guy when we stopped and the event happened and it took place in a car and I just feel like I am never going to move past this feeling of it just happening. I know that things take time but I just want to have the whole thing behind me. I am not sure if living in the town in which the sexual assault took place is making me feel this way or the fact that I ran into the guy the other day and was seeing him for the first time since the sexual assault happened but I do know that I have had some strong feelings around the whole thing in the past couple of days. Also, this was not a one-time thing it happened over the span of about 2 years. Wondering if anyone else has had a similar experience. I understand that this is not the easiest thing to talk about but I need to know that I am not the only to feel this way