if you've been living on the earth even for a short period of time, you know that women will pretty much fuck anything, especially something that has a Giant Penis regardless of what species of animal it is, so it makes complete sense that they would given the opportunity to have sex with an Extraterrestrial. and like what those scientists said in that science journal that if Extraterrestrials ever did come to and started living amongst us stated that one of the first things that they'd do is have sex with our human females before we started seeing them performing in professional porn scenes. so it really doesn't make any sense why we don't see many or at all really any movies where females humans are seen having sex with male aliens in films, since it really isn't that farfetched for it being a plausible reality.