Not that I don't disagree with breaking monogamy while married - because I do, but, as far as sex being a huge attachment - it depends on the person and the ocassion by which the act is committed. Some people I have known for example, have had sex as friends to help one feel better after a break up and yet neither felt anything other than friendship afterwards. There are other reasons it may happen as well - even between strangers - and still no attachment involved. Now, for me, the minute I kiss - there is an attachment .. or say/hear "I love you".. it doesn't even take as much as the full act of sex. But for some, they can turn off that part of their emotions to get whatever needs they have - met.