In my past relationships I used the "I need space" line when I had serious doubts about the relationship. I didn't want to lose the guy, but I wasn't sure about his commitment to me, so I kept the relationship in limbo. Some girls or guys say this because they want to engage in another relationship, but they don't know how to break it off with the other person. In any case, consider what you need from her. If you're looking for a steady, committed relationship she is not the one for you. I've been in relationships where I have broken up with guys and gone back out with them, then had a fight and broke up again. While it makes for good make-up sex, it's not worth it. Stability in a relationship is a beautiful thing. If it is strong it will last. You can not be content in this kind of relationship because mistrust and an unstable foundation exists. Give her all the space she needs, act like you've never been happier, and let her heart decide. It may be that she just has no idea what she wants. You should be worried about this. Talk to her about it and tell her how you feel about what's going on. It will give you a clearer picture of what you need and what you should do.

Yes, you should be concerned. It sounds like you might need to break up with her & date someone else. Life's too short to be wasting your time and energy on someone, who's clearly cheating on you. You're better off separating, and dating other people. You'll be glad you decided to date other people because if you don't, you'll just find yourself depresed and disappointed that you didn't break up earlier. Good luck!

Dude as hard as it seems life is way to short to be hanging onto a girl who maybe doesnt know what she wants from life or you. As hard as it may seem I guarantee in a few months you would have forgotten her and will be fine. Good luck.

I think you either enjoy being with one another or you do not. If you do then why would you want to separate? If anyone said that to me it would be goodbye.