Stepfather (50+) of my best girlfriend seduces me!

What the hell happened?! Did that seriously happen? I actually just wanted to visit my best girlfriend Sandra. Her stepfather opened the door for me. Unexpectedly, Sandra was apparently not there. Well, I'll just wait for her then. That was fine with her stepfather. But then he talked about sex and asked me about my experiences. It was embarrassing and uncomfortable. I can't talk about such intimate things with my best girlfriend's stepfather. Besides, he is almost 30 years older than me. Then he cum closer and closer and groped me. He was apparently horny for me. And somehow it actually happened. We had sex! Right on the kitchen counter.... crap... hopefully Sandra won't find out about it....