Is this considered sexual assault..?

One night I went to my best friends house him and his sister were my best friends... I always knew he was in love with me since 2017 but I never felt the same way. It was a wild night and everyone there got super drunk except for him... he didn’t drink at all. I started to feel sick so I went in to his room where he was laying on the bed and cuddled next to him and kissed him in my head I didn’t want to but it was like my body did it’s own thing. We made out for a few minutes but that was it. The next morning I was still drunk/ had alcohol poisoning he climbed into the bed I was sleeping in he started touching me through my underwear and physically turned me over... I kept hoping someone would wake up and make him stop but no one did. He started kissing me and biting my neck. But I can’t remember saying no... if I don’t say no is that consent? If I don’t say no would it be considered sexual assault? After that night when I would find myself alone with him anywhere including school he’d grab my butt or boobs. But I never said no. I felt like since I kissed him I led him on I couldn’t take it back now. I couldn’t tell and get him in trouble he was my best friend... this was all my fault because I kissed him. Idk what to think? Was it sexual assault?