Hey, this is quite a common problem, the thing is that sometimes people tend to skip the bit thats actually really important - the foreplay. Ive been there myself, especially if you really really enjoy sex and want to skip the foreplay. The thing to do is just slow yourselves down, and make sure he takes an appropriate amount of time getting you wet, coz you'll just end up sore and wont look forward to sex. and trust me, friction burns down south, bad bad thing. You both just need to slow down and make sure that you take the time before hand to get you BOTH ready. On the plus side, you're getting twice the fun, and in my experience guys are happiest when they're giving you pleasure (the ones that are worth it that is) so he wont be feeling left out.