Welcome at JA.
Most this feeling of guilt is there due to the self image which you have created for yourself.
The act which you have done is does not come under the category of crime or any type of violation of acts.
You should look around this is a quiet normal act.
But if you are feeling this again & agin then this may be the sign of a hidden depression or it may lead you to this path.
You should either discuss about this to your near & dear ones
Or should take a consultation from psychotherapist or a psychoanalyst.
Hope this will help you.