It's my fault.

I get thwarted with unpleasant sexual words from my closest friends who I once had a healthy friendship with but it always feels like my fault, I never set these boundaries even when the sighs were clear and I hate that I let it drag on so long and soon learn too hate myself instead of the person who did it in the first place, I've been told it wasn't my fault but if I never had the courage to tell them no when it first started I won't have the courage to say no now when I know I let it go on too long and the friendship should end.