On infidelity

I was very judgemental & somewhat narrow minded, with hindsight, due to my upbringing in a "Christian" sect.
After 30 years of unsatisfactory marriage, which I had viewed as a life long commitment, I fell in love with a much younger man whom I met as a volunteer working with a Charity.
I fought this feeling with all my strength, but as he too (also married but with wife & child abroad) felt the same way, we eventually had an affair which lasted 4 years, until his wife came over to the UK.
At this point I ended our relationship, as I didn't feel I wanted to carry on in a clandestine manner, although this broke my heart at the time. My ex husband & I separated over other long standing unresolvable issues a year after my affair started.
I felt no guilt as we didn't hurt anyone & brought each other great joy & happiness, far more than I ever experienced during my marriage.
This is a simplified account, but as a consequence I am no longer either 'Christian' or judgemental over anyone's life choices, as I know that human relationships are very complex!
I am very happy, having lived alone for 11 years by choice, with loved family & good friends!

I feel that there are different types of infidelity,

A, Its just the person and they can not change their ways and do not really want to.

B, It happens just the once due to various circumstances

C, You can not help yourself and wish you could be different

I have met all three kinds of cheaters, as for can you forgive again it, depends on what kind of a person YOU are, my friend was with her husband 26 yrs and he cheated on her, she tried to patch things up, carry on but she just could not, she still loves him very much and is a mess without him, even now 6 years later but she just can not take him back.