Brunette with long legs takes cock into wet crotch and cums

A beautiful brunette calls her beloved guy on the phone before going to bed and tells him how much and passionately she loves him and how she wants to fuck. This speech is heard by the half-brother and in the middle of the night he inserts his impressive penis between his sisters legs. In the morning, the girl tries to find out the relationship with the dude, but only re-sucks the dick purely for thanks!