It is true that there are scenarios where a woman would love someone so deeply but will still cheat on him with another person.
In such a case, it is hard to even try and take in the reasons as to why a woman in love with her man would cheat on him.
There are a number of reasons explaining this:
1. Bad influence
It is said that bad influence corrupts good morals. This situation comes in to play especially if the company she is keeping is made up of people who enjoy dealing with multiple relationships and all of them have turned out to be "successful". She will also get to this point and try it out.
2. Curiosity
She just wants to try out how it feels to have another person. She wants to see whether she can manage to have another relationship what good does it do; she is exploring. This curiosity then becomes a habit and she becomes a cheater.
3. Availability of options
There some people who are referred to as "bestie". These are the type of men who will never give a girl a chance to enjoy her relationship.
They are hanging around her with so many stories and within no time, she will give in to the demands of her "male friend". She will do this knowing that it is only about friendship.
4. Loneliness
She really loves you but because of some reason, you are never close to her 24/7. She will take advantage of this situation to cheat. She will justify that perhaps she needed to cuddle and you were never near and that is why she called her male friend.