Yes I am.  I found this out when I went on holiday with a friend of mine with our daughters.  We started looking at a glossy magazine with some really fit looking women in them and we both started commenting on them in a sexual way.  When we had put the kids to bed we started drinking wine and chatting.  All of a sudden my friend said, this is what you want isn't it? and grabbed my head and started kissing me.  I was shocked but went with it.  We ended up undressing each other and taking it in turns to lick each others nipples, we then went to bed and the rest is history!