Temptation for a mature guy

I moved into my new house a while ago,I thought it was great to have peace and quiet as opposed to the hustle and bustle of city life,Ithought there were no neighbours for miles,until one day last week I caught sight of 2 females walking through the wood nearby,I watched them to see were they headed,to my surprise there was a small cabin situated not far from me,I never gave it any more thought until the following morning,I was outside my place just relaxing,when they appeared,they were very nice and polite,we exchanged good mornings as you do,they were mother and daughter,who were having a mid term break,two days after this the daughter came to my door and asked if I knew were she could have a swim, I told her about a little spring nearby that she could use,she asked me to show her where it was,sure I said,when we got to the spring she just stripped naked right in front of me,I found myself getting aroused at the sight of her young firm body,made my excuses and left,I can't stop thinking about her, but I know it is wrong to.