Best girlfriend on the phone. Her fiancé fucks me!

The fiancé of my best girlfriend Lisa came to me to chat about his relationship.....er started with the fact that his fiancée has not let him go for 6 weeks He was so horny that he started to grope me, so I had his cock in my mouth, at the moment his fiancée calls....while I talk to her I blow his fat cock ... He gets hornier and hornier, so he takes off my knickers and fucks me hard. His fiancée calls again while he takes me from behind and spanks my butt until it's red hot! Lisa overhears everything on the phone and is beside herself! What happens next is unbelievable.....!