It is hard when we are not resolved.
If you can be resloved about whether the marrage is truly over - which should usually boil down to whether or not both people are "in love" or "love" one another in the way that makes a marrage.
But I understand some things are not so simple, especially as this is a thing of the heart which can make it impossible to heal.
For clarity, I will share something of my own seperation here;
My wife never really loved me. Been together 10 years, have 4 kids. We are seperated and I have the kids, she visits every day for food and to see the kids.
I never felt that I didnt love her, but I see the truth in her view; she did never love me. To make it worse, she is having an affair. Still, however, I love her. I do not want her back in any way at all, I welcome her to the house because my children need their mother, I even advise her or listen regarding her new life and lifestyle. But we will never be together as hubby and wiffey again. Never. EVEN SO, I still love her. Such a thing takes time to heal. It's only been 2 months since seperation, so I'm gracious with myself in this.
Feeling love, despite knowing a marrage is ovr and being treated like poo is just normal. If we truly are compassionate and worthwhile people, then our hearts will take a looooong time to adjust and relearn and return to us. But this doesnt mean that we allow our love for our spouses to turn us into their slaves or eunuchs or, even worse, fuel as to react negatively and hate and hurt them. All these things may come to mind and may be in or hearts at any given time, but it's got a name; its called GRIEVING. And grief of a dead person is bad enough, but grief of someone who we see and have to get along with in a whole new way as if they are dead to us in our hearts - that's gonna hurt and carry on for some time. God will provide the situations and relationships neccisary to carry us out and thru. So eyes open.