I know what to do, and i know it works because I've tried this before. Get in the ear muffs position, if you're unfamiliar it looks like this
http://www.sweetvips.com/images/oral/earmuffs.jpg
Then after a few minutes into it, put her hand on your cock and get her to start stroking you while you are eating her out. When you feel nice and hard then switch to ordinary sex. Then mix up your routine some more, try the her 68 position next, like this
http://www.sexinfo101.com/positions/cun08t.jpg
Then when you are done with that, have some lotion handy so you can give her a breast massage. Penetrative sex is good, you have to be able to do it sometimes. But there are many other things you can do besides that to please her.
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