Shooting my sperm into her pussy like that won't leave any trace, right? I was seduced by my girlfriend's sister. She has a perfect body, a beautiful and dignified face, but deep inside is a wild animal that is always hungry for sex. Whenever my girlfriend is absent, she finds every way to squeeze out all my sperm. In order to avoid being discovered, she always uses her mouth to suck out the last drop and swallow it all. She even hides my sperm by letting me ejaculate all inside her uterus. The feeling of excitement and fear of being discovered makes me even hornier. She continuously sucks out all my sperm, not even leaving any for her sister.