My boyfriend's grandfather wants to smell my wet pussy

Today I went to visit my boyfriend at his house. like every weekend, i met your family for lunch. after lunch everyone was resting and my boyfriend fell asleep. I decided to go up to the terrace to enjoy the fresh air. but when I got up, I met my boyfriend's grandfather. he was masturbating. I was so surprised that I was paralyzed and didn't know what to do, so she realized that I was there. he approached me and grabbed my arm. he started to touch my vagina, I wanted to stop him, but he was stronger than me. I don't know why, but my vagina was wet and I didn't want it to stop. I stopped fighting and let him touch me.