Women in relationships aren't often recognized for their outstanding poker faces, especially when things aren't going well. The good news for you is that by just paying a bit of attention, it usually isn't hard to get a handle on what is going on inside her head as it concerns the state of your relationship or its future.
If she's thinking that the end is near for the two of you, her actions will no doubt be affected. Remember: She isn't sending out these signals purposely, so the odds are good that she'll reveal her true feelings before she is able to say anything out loud. You might be able to spot the signs that the end is near and avoid having to sit down and have a heart-to-heart conversation or an awkward breakup.
Here are signs she might be sending that should have your breakup alarm going off. If you start seeing these tip-offs, you'd better decide if you want to jump ship before you get thrown overboard or if you want to try to make it work.
She doesn't make future plans
Planning ahead is the hallmark of what makes a relationship serious rather than casual. Women in love are usually eager to secure your time well in advance of important events to make sure you'll be able to make it, so that she won't miss out on the opportunity to show you off. If you find that your lady isn't dropping hints about events or plans more than a month or two away, there's a good chance she isn't sure you'll be around. For this reason, she's reluctant to secure future complications (such as tickets to events, travel arrangements, or RSVP situations).
She avoids your family & friends
A girlfriend looking to secure a place in your life will have to make nice with both your family and your friends, but she wouldn't put in the time if she didn't think there was any future in your relationship. There are two reasons why she might not want to spend the quality time: Either she doesn't like them or she doesn't want to become too ingrained in your social circle, which would make it harder for her to walk away. And if she genuinely dislikes them, a relationship-minded girlfriend is likely to throw you a bone every once in a while if she knows she’s going to be a part of your life.
She never leaves anything at your place
There's a pretty common joke about women “accidentally on purpose” leaving things at a man's house to ensure or indicate a repeat visit -- and there's a reason why the story is so believable. Women in strong relationships are apt to make themselves comfortable in their boyfriend's place and leave a few things laying around. It can be practical items like a brush and a pair of pyjamas or something personal like a book; in either case they signal her intent to visit again. If your girlfriend always packs a complete overnight bag and is reluctant to leave anything behind, it might signal that she isn't sure that you are going to remain on her to-do list and she is wary of losing those items for good.
She doesn't confide in you
When something bad happens at work or she has a fight with a friend, women have different people they go to with the ins and outs of the events and her feelings about them. Some have a go-to girlfriend, others a family member, but eventually a boyfriend is going to be exposed to whatever the most recent crisis was. How she involves you will speak volumes: If you find yourself getting the short story devoid of her emotional reactions, she might be figuring that it isn't worth explaining to you. If she divulges the back story, describes everyone involved and solicits your opinion, you've got a woman on your hands who is trying to invite you into her personal world. This signals your importance to her and her openness to sharing herself with you -- both of which indicate that she's in it for the long haul.
She doesn't argue with you
It's rare to find yourself in a perfect relationship with absolutely no conflict -- there are always going to be issues that need to be resolved, apologies that have to be made, and arguments that need to be had. A woman with no emotional investment in you and your relationship won't bother; few people will argue if they have no desire for resolution. That's what makes make-up sex so damn good -- arguments and disagreements are almost always emotionally charged and are a great indicator of passion in a relationship. If your woman calls you on your mistakes and defends herself vigorously, she probably cares enough to sort things out with you before they become relationship deal-breakers