Feeling like a fool in Sexual Harassment in the Work Place

I am feeling like a fool. Why did I let all of his behavior go on for as long as I did? He knew I was never going to marry him, so why did he continue for as long as he did and play the games like he did. I don’t think anyone understand what I am feeling inside and how hard all of this is. I don’t know if it is just the years of going through all of this that are finally coming up. I hate this emotional roller coaster. I hate it with a passion!!!