Ask and you shall receive

Ask and you shall receive is about all I can remember from Sunday School. Last July I was bored and horny, I live with my only sibling Susan 25 single little overweight like me. So I just asked her for a fuck expecting her to refuse, but she said okay I'm horny too. So we fucked and now have regular sex together, but we still date other people. Our sex is a casual arrangement between us. Then last week our divorced mother Rhonda 45 came for a visit, the second day was here I asked her for a fuck and at first, she was shocked. But she agreed and we had sex and then a threesome when Susan got home from work. I'm making the most of her on her visit and she is returning home Sunday.