My stepdaughter's boyfriend fucks me by mistake and we end up in a hot bisexual threesome

I'm resting when I feel a cock inside me surprised I look and it's my stepdaughter's boyfriend who by mistake was fucking me thinking I was his girlfriend so he stops but I was already too wet to stop I tell him to continue and between the movements awakens my stepdaughter who is next to her she complains but the boyfriend convinces her to join so we end up in a delicious threesome where we were satisfied.