It happens in so many relationships: Your love ... once a pot of boiling passion, cools off to a bucket of lukewarm water.  And, be honest, men — at times, you’ve wondered if you should just break things off. But, you’ve invested time into this relationship and you really do like the woman you're with. You even say you love her. All relationships settle into a routine after awhile, right? So, you believe in seeing it through. Here's the thing though: Your girlfriend also senses the lukewarm temperature of your [...]