...you're over-thinking it. Start with foreplay and don't have a pre-plan as to it's outcome. You have a turn-off switch in your mind for some reason....which is not fair to your partner and robs you of pleasures awaiting.
...men are wired in a way that it's physically painful to be turned on and then told to stop before being able to release the build-up. After a 2-year relationship, if you plan to shut him off then don't start (i would be giving you different advice for a 2-day relationship because it could be interpreted as a flirtatious stage that early on).
