The lady he is with first is his girlfriend, the one he fucks is the mom, apparently. The almost look the same age to tell you the truth, no offense.
I agree Andy, why was the mom so upset unless she was jealous and wanted his dick in her pussy instead. I don't think I've ever had a gf (that I was aware of) who would have fingered herself watching me with her mom. I've fucked a couple of moms, but the gf never knew about it, but I'm pretty sure it wouldn't have been a turn on for either gf. I also agree that mom should have jumped into the fray and got fucked.
Lol, the mom gets the guy started, so wonder if she was jealous. I liked that the daughter was so turned on that she was working up when he came up the steps. Mom should have just joined in, she wanted it.