I am scared to ride my boyfriend, because I'm bigger about (215lbs) and I think I look silly/stupid on top of him, and I don't know how to do it right. I end up cramping and miserable so I just get off of him before he cums... He loves to be rode until he cums... so it is really affecting our relationship... Does anyone have any suggestions, advice, or stories of their own about this?? I want us to have good sex and I want to be able to ride him until he gets his... how can I do it?