How to access functions in another class in the same namespace?

namespace TeachSpouses
{

    public class Util
    {
        
        public bool CanMarry(Hero heroPlayer, Hero heroMarry)
        {
            return (heroMarry.IsActive
                && heroMarry.Spouse == null
                && heroMarry != heroPlayer
                && heroMarry.IsFemale != heroMarry.IsFemale
                && heroMarry.IsLord
                && !heroMarry.IsMinorFactionHero
                && !heroMarry.IsNotable
                && !heroMarry.IsTemplate
                && heroMarry.CanMarry() == true);
        }

    }
...
internal class sbTeachSpousesCampaign : CampaignBehaviorBase
...
private Hero GetUnwedHeroInSettlement(Hero heroOnTinder, Settlement settlementToSearch)
{

    Hero heroSpouse = null;
    Hero heroCurrent;


    for (int iCounter = 0; iCounter < settlementToSearch.HeroesWithoutParty.Count - 1; iCounter++)
    {
        heroCurrent = settlementToSearch.HeroesWithoutParty[iCounter];

        if (Util.CanMarry(heroOnTinder, heroCurrent)
        )
        {
            heroSpouse = heroCurrent;
            break;
        }
    }

    return heroSpouse;

}