Is it OK to call virtual properties from the constructor of a NHibernate entity?

take a look at this example code:

public class Comment
{
    private Comment()
    { }

    public Comment(string text, DateTime creationDate, string authorEmail)
    {
        Text = text;
        CreationDate = creationDate;
        AuthorEmail = authorEmail;
    }

    public virtual string Text { get; private set; }
    public virtual DateTime CreationDate { get; set; }
    public virtual string AuthorEmail { get; private set; }
}

i know it's considered bad practice to call virtual member functions from the constructor, however in NHibernate i need the properties to be virtual to support lazy loading. Is it considered OK in this case?