Whether your partner has been with you for years or just for one evening, you probably want to make that person feel comfortable. And if your time together is heading toward the bedroom, you probably want to do everything in your power to keep the heat building. Avoiding the common mistakes that can ruin your partner's orgasm can help you both keep things more sexy than weird.
This is not to say that your sex life must progress like the staged scenes from a movie. I get it: life happens. Even when you do everything in your power to set the mood for a romantic evening, the votive candles set the curtains on fire or the cat throws up on the bed. Sometimes life just intervenes in the worst way.
But there is still a lot you can do to tip the romantic odds in your favor. The biggest idea: communicate with your partner, discover likes and dislikes, and act accordingly. Sure, this idea has been trotted out a thousand times, but communicating well with your bedmate, and not falling prey to assumptions, can go a long way toward making sure your sex life stays awesome. Keep these mistakes in mind and have fun out there.