If someone you have been dating for a while begins to exhibit changes in their level of eye contact, body posture, attention to you, availability and/or becomes restless or less communicative, pay attention. Their feelings have shifted. Be careful not to be too quick to explain it away. More than one occurrence should set off your silent alarm. Make sure that what they say matches what they don't say.

claiming your territoryWomen know that you give out four signs when you are interested in them. The signs they look for are:1. Running your hands through your hair to draw attention to how thick it is, and sucking in your gut.2. Moving between her and another man to create a more intimate space between her and yourself (you're also creating a wall to block other male rivals).3. Making excuses to touch her.4. Your pupils are dilated. If you like what you see, your pupils will actually get bigger.Her Move: If she's interested in you, she'll act flirtatiously to show you that she's hearing your signals. She'll probably give you dreamy five-second gazes, each one interrupted by three to five seconds of looking away. As you become more into her , she'll cut her look-away time in half, until she finally has you hooked.Tip: If you're single, use these signals to your advantage by consciously signaling to her at the right times. If you are actually out with another woman, try to avoid the top four signs. Remember, your girlfriend/wife will also notice that you're signaling to somebody other than her.
"I want to walk" signalsWhen you start to fidget -- i.e. making napkin sculptures, peeling the label off beer bottles, or fiddling with a pen -- it usually means that you have something on your mind. Women know this, and they'll be sure to ask you what you are thinking about.Her Move: If a woman can tell that you want to start a conversation with her, she'll learn towards you across the bar or table to show that she's open and willing to listen to what you have to say. But, she'll keep her legs crossed to maintain the I'm not that easy below the waist distance