I am a very sexually open minded person and I think that a healthy sexual relationship is vital to happiness. I once was one of those people who couldn't try new things... let alone even talk about sex freely. I also suffer from anxiety so that was no help. Over time, I have learned that as with everything... communication is key and most important. You may find it hard to talk about sex and what you like, but if you can force yourself to bite the bullet and try it, then eventually you will become comfortable with it. The same goes for actually trying new things. Some times you just need to be brave and push through your shyness or anxiety. I also think it's important to realize that not everything your parents taught you are always right. If you were raised extremely conservative, trust me when I say that it is OK to let go of that some times and you will be happy that you did. If there is something your S.O. wants to try, but it seems too extreme for you, then try baby steps. Try something similar, but less stressful. Try starting out with other things that you might be a little more comfortable with. As you start to try the new things you will become more comfortable with each other and more open to try the more aggressive things. Try not to be shy and face your fears. You may like it or you may decide it's not for you, but I promise you, it will be worth it!