Who is actually fucking me? Part 1

He got home from work quite early that day. I was lying on the bed with no panties on and that seemed to turn him on quite a bit. He immediately fingered me and pushed his cock into my wet cunt. Really unusual, usually nothing happens when he comes home. He was so different today and I was getting hornier and hornier because his manner turned me on somehow. But am I really fucking with my husband now or is it his twin? What else happens? Must see!