I'm not sure what to do

A couple of months ago I was sexuallly assaulted and almost raped, I haven't had sex or anything sense then. My boyfriend knows how traumatic it was for me but I feel terrible I feel like I can't even kiss him I can't do anything because as soon as I even try I start to feel the way I get when I was being assaulted. Does anyone know how I can stop feeling this and slowly move on? I really miss sex I miss kissing my boyfriend but idk how I can again without feeling that way Please comment I need some thoughts because I am so lost