The Collaborative International Dictionary of English v.0.48:

Lovingness \Lov"ing*ness\, n.
   Affection; kind regard.
   [1913 Webster]

         The only two bands of good will, loveliness and
         lovingness.                              --Sir. P.
                                                  Sidney.
   [1913 Webster]

WordNet (r) 3.0 (2006):

lovingness
    n 1: a loving feeling [syn: lovingness, caring]
    2: a quality proceeding from feelings of affection or love [syn:
       affectionateness, fondness, lovingness, warmth]