Couple of weeks ago I had introduced my little sister ( 15 ) to my boyfriends best friends ( 18 ) . Last night he took her out to dinner . And trying to be sneaky she brought him home though the basement door . And I caught them using the spare bedroom in the basement . He was on top , mounted and fully penetrated her young p**** . He’s dicking her real good . She’s moaning f*** me . He looked down and replied you like this d*** ? Then I heard her say god yes it feels great . I watched them long enough that he released twice . Then I heard him say I’ll go out the back basement door . And I’ll see you tomorrow . I was standing in my bedroom door when he was leaving . He looked at me with a worried look . I leaned over and whispered you get your d*** sucked ? Pond my p**** and I’ll finish the evening with a bj . He took me into my bedroom closed the door . And took me before he left . Yes he received his bj .