I think all people not just men, are guilty of speaking the language of love when it is something more like lust, or need or comfort.  Love is a word only.  To me, there is always signs, yet the other participant might be so blinded by their emotions, they can't see that it is not completely shared emotion.  If a man or woman walk away from a relationship without a sign, or shared thoughts of discontent, they are cowards and possibly somewhat cruel.....those folks can GO.  The person left behind will be hurt, confused, devastated but in the long run, the person who left them did them a huge favor and they can move on to find a true companion.  Life is too short and lessons are hard learned.  Good luck in your search for love, respect and a true companion in life.  It does happen and those who find it are blessed.