Unexpectedly pleasuring my stepmom's sensitive area during a massage

I was over at my friend's place, chilling with his family when my buddy's stepmom offered to give me a massage. I'm not one for that kind of shit, but she insisted. As she started digging her nails into my back, I couldn't resist the urge to reach down and stroke her sensitive area. It was purely accidental, but as soon as I touched her, she responded with a moan and a firm grip on my wrist. I could feel her tits heaving under me as I continued to pleasure her. And then, when I thought she was done, she dropped to her knees and took my cock in her mouth. I was taken aback at first, but then I realized this was the best fucking massage I'd ever had. She may be a milf, but she's got a body and a skill set that would make any Latina babe proud.