As to the "I did nothing to stop him" accusation, I must admit that you are on the right track. I didn't verbally ask him to stop, which is my fault, though he did mention that I didn't seem to like the hugs, and I told him that I didn't know him well enough to hug him. He ignored that and continued doing it. I also made it pretty clear through body language that I was not enjoying it. I stiffened, aimed my upper body away, slid away from him when possible, and tried in every way possible not to touch him. What part of that constitutes interest?