Unconditional love?

What is unconditional love?
According to Wikipedia:
Unconditional love is known as affection without any limitations, or love without conditions. This term is sometimes associated with other terms such as true altruism or complete love.

A week after I found out about my husbands offending, my sister came to visit. I tried to explain how I still loved my husband of 18 years, my partner of 20. I tried to explain that my love for him felt ‘unconditional’ but she disagreed with that and told me that unconditional love is only for our children not our partners. She also told me that what he has done is ‘unforgiveable.’
Throughout this journey I have met probably a couple of hundred women online via the Stop so and Lucy faithful forums. I am in touch with a bunch of them via 3 WhatsApp groups plus a few others one to one. I speak to most of them daily. We pour our hearts out to eachother.
All but a couple of these women are wives of offenders and a couple of mothers too.
I think they would all agree with me that they love their partner / son unconditionally.
We should not be defined by the worst thing(s) we have done.
The term ‘unforgiveable’ is very subjective. Who is to say what you can forgive and what you can’t?
You do not have to condone a person’s behaviour to forgive them or to see past it.
When you have known and loved someone for many, many years… You see that there is a whole person. The offending is just one very small part of who they are / who they were…. It shouldn’t completely taint the whole person. We are human and human beings are complex. I have worked with people with mental health and addiction for many, many years. I understand just how low our mental health can become and what negative coping mechanisms people can turn to as a way of coping. When we are at our lowest points we are vulnerable to being entrapped by the crooks of addiction.
Sadly for my husband and the other men who’s family I am in touch with… Their addiction was not something society are ready and willing to accept.
I think from day one I kept expecting for a switch to flick and me to stop loving him but it never happened. I kept saying how if he was any other type of man that this would have been the ‘final straw’ but for me… This was the straw.. The only straw.
Don’t get me wrong I have been going through unbelievable anger and shock for these 18 months. We have had endless conversations about how he ended up where he did. This man has been an amazing husband and source of support to me. He has been an amazing dad to our boys. My children have not grown up in a toxic environment. They would not be ‘better off’ if we split. They love their Dad as much as I do. They know he is a good person who has made a mistake.
One of my family actually said to me… Had I considered that my children may ‘resent’ me when they are older for standing by their father?! I cannot believe that. My boys I feel would resent if I didn’t fight to keep our family together.
My husband has done wrong and is paying for his crime via our judicial system. He never intended to blow our family apart. Yes his behaviour was the catalyst but the agency and family response to my husbands crime has been the most damaging to our family.
So yes in answer to my earlier question… I do believe that unconditional love can exist in a marriage or relationship.