@livelyupmyself,
Honey, it only hurts because you don't yet know how to do it correctly! There are two elastic rings that seem to be hell bent on dissuading entry and of course, the power of "taboo" prevents a lot of people from exploring - but if you study tantra just a bit, you find that patient rubbing or licking of that nerve-rich area trains those o-rings to crave entry and envelope whatever is patiently knocking at the rear door... That area is - like I said before - wired like crazy with nerve bundles - and can change how you AND your man please each other after one experience... Anyway. A sure way to save your poor lips... men generally love it because it's so tight... and the position gives the poor things a temporary feeling of dominance...
I mean - they so desperately need that... (giggling) If you absolutely love sex - and you adore him - this is awesome.