wife likes only one cllmax

We have been married over 40 yrs and have had a satisfactory sex life. My wife doesn't seem too aggressive about having sex but never declines unless she is ill. We're long past having periods...nice! During the first few years, she didn't want oral sex even though she rarely had an cllmax. Subsequently, she came to like oral sex and almost always has an cllmax...note that is singular. After having an cllmax, she wants no more oral activity...only one cllmax. She then finds it okay to have conventional intercourse but she doesn't usually have an cllmax from that. Also, she is very non-expressive during sex. There is no moaning or other vocalization. She does seem to enjoy it but it is hard to tell. I know the stuff seen on sex movies is pretty phony and not realistic so I don't expect that. I would like to maximize my wife's pleasure with multiple cllmaxs. I am not the best sexual performer in the conventional form of intercourse and need to take Levitra of use an Erecaid, which is a niusance but effective. My question is; are my expectations out of the norm or is what I've described common? I appreciate your thoughts on the subject. Tweet