She was obviously game for a little interspecies experimentation by now. While she put her two upper arms relaxed behind her head the lower arms spread her thighs and allowed him to slide into her moist nether region. She gyrated her lower body sensually, so his dick could slide comfortably into her surprisingly high tempered body. After some thrusts and vigourous “massage”, he finally pumped his warm sperm into her vag, to her great delight.
Would this unprotected sex create offspring? Most likely not, due to incompatible DNA, but this didn’t impair the fun aspects of such encounters at all. Instead it made the deed more care-free and enjoyable. He was sure he would return to her soon for more “experiments”. He hoped he didn’t contract some weird alien STDs though…