When you are just about to climax, ask your partner to penetrate you. Your partner will be all aroused and have an erection just by watching you masturbate so do not worry about turning him on. This will amplify the pleasure for both of you. As he penetrates you, go with the flow and allow yourself to reach the peak. You will soon feel your vagina contract, and your body stiffen.

Source: Sex Tip #137– Masturbate till you are about to orgasm and then have sex | TheHealthSite.com

This tip combines two of Bree’s favorite things, masturbation & penetration. She’s eager to give it a try.