I've met 3 subject matter professionals about this. Don't ignore if you think you fixed it once.
The theme about cheating and infidelity resonated in my marriage and pushed me to seek counseling with my husband, who I love dearly.
I learned in every step of the way that Cheating can undermine your self-esteem whether real or imagined. It's normal to have mixed emotions about whether you want to stay in the marriage or leave.
If you've started a family, couples counseling & relationship therapy is one of the best ways to prevent divorce when infidelity (cheating) may be present.
You'll need a strong support network during this time. It can be helpful to go to family counseling with your kids if they are having a hard time adjusting to their parents' decisions and/or separation.
Professional support groups can also be a helpful way for you to deal with your feelings, but remember that they won't necessarily solve the problem for you.
The best way to get through this time is by getting as much information possible and being honest with yourself about how you feel.
5 top signs your partner is seeing someone (cheating) behind my back
Cheating is a horrible thing, but some people do it anyway.