So my current girlfriend and I decided to experiment in anal play recently and we both finally got up the courage to try anal sex. Now after a long "warm up" she told me she was ready to try and after applying a hell of a lot of lube slowly began to enter her. We took it very slow and she enjoyed it at first, but the problem was the lube kept drying out. We were using durex play but it wasn't lasting long enough and as it dried it began becoming painful. What lubes would you recommend for anal sex? Any that are readily available in high street shops such as Boots or maybe Ann Summers?