When it comes to alimony, Arizona courts typically do not consider infidelity as a factor in determining the amount or duration of spousal maintenance. A look at when spousal maintenance is deemed necessary, who qualifies, and how the court decides how much alimony to award.In the vast majority of cases, a parent's adultery won't have any effect on child support in Arizona. In general, cheating won't have any impact on the four major parts of divorce: property division, spousal support, child support, and child custody. Spousal Maintenance. Because Arizona is a no-fault state, infidelity is not a factor in the decision to award spousal maintenance (also referred to as alimony). In Arizona, either spouse in a divorce can have their family law attorney request an order for spousal maintenance or spousal support. Spousal support is mandatory in Arizona if certain conditions are met. It is not automatic. Arizona is a no fault divorce state.