Nipple Sucking

I am married, my wife was not breast fed as a baby I think she thought she had missed out and felt deprived, before we have sex she always sucks my nipples for a very long time, I found it a bit strange at first but you give way to each others sexual needs, now I am really into it, I have nipples like a woman with her sucking on them, I know its not a very macho thing to admit to,
I would like to hear from other men who are having the same experiences and what they think of it, as well women who like sucking men's nipples,

Nev