When we love someone from the bottom to heart; we totally and blindly trust that person, but we do follow some taboos and knowing that all five fingers cannot be the same in size, I mean there are lots of married couples who are living happily and some peoples who are very frank by nature and some are very jealous & possessive by nature and there are few who gets attraction by opposite sex and due to that they involved in Extra Marital relationships or cheated their boyfriend/girlfriend.
One can have endless debate about “why men cheat” or “why women cheat”, but the fact is that prevalence of adultery is as old as marriages in our society. Justification of casual affairs and flirting has become a norm in newspapers and internet networking sites. Thus in this world, affairs is possible in workplace among office colleagues, in neighborhood, among old friends of different sex or school/college mates, between close or distant relatives among business partners and their family members or rekindling with past flames from previous relationships.
An affair may last for years and the unfaithful spouse can display a sincerity belying any sign of infidelity or may increase passionate behavior on and off basis confusing you even more. Your intuition is your biggest tool in a relationship. Come to 24 hrs Investigation if you suspect any unfaithful behavior from your partner.