Your step mom told you that she's the only woman for you and that only she can fulfill your needs. You think she's right because she's the only liberated woman you know, granted you are only 19. She cuckolded your dad and last week she gave you a blow job. This time she is back for more. She wants to know you are not with anyone else because she is the only woman for you and you smile, because right now she is. She jumps on your cock and gets herself off and then sucks you and gives you a hand job to completion