My girlfriend won't let me do it raw! Even though we've been together for a while, we still need condoms! This situation is making me lose interest... But then her sister seduces me by showing off her big tits without a bra! I still love her, but my feelings are wavering when I see her soft-looking breasts! And when she says it's okay to do it raw... I can't hold back any longer! I take every chance I get to do it with her! The sense of immorality is unbearably exciting! I can't stop betraying her and cumming inside her while she's away!