She wants a break

[Lost Soul]

My fiance of a year has just said that she wants a break from me. We have been together almost 2 years and everything had been going great. She is almost 20 and I'm 24. I'm the only one she's loved and she's the only one I've loved. I have no doubts that she is the one that I want to spend the rest of my life with and she had been saying the same thing all along. She was so excited about us living together, getting married, and starting a family. Just recently she started a new job and since then she's become less dependent on me. She used to be so needy and need me there with here as much as possible. I noticed she slowly started needing me less and now she says we need to take a break. She said that she still loves me but she's not sure if she's ready to get married yet. She said she's never really gotten a chance to see what it's like to be on her own. She said she doesn't want to hurt me but she doesn't know what else to do. She can't help the way she feels. I've planned my whole future around us. I never would've proposed if I had any doubts about us. She says she's confused and needs a little time to sort out her thoughts and feelings. She said that she thinks if she spends a little time away from me she will realize how much she really needs me and come back. She said she doesn't want to go out with other guys but she won't rule it out and she wants me to do the same. She said if it was "true love" then we would get through this and be back together. She basically said that she thinks she will come back. I told her I would give her her space. There's really nothing else to do. What else should I do? How long could this last? How long should I wait? Is she being honest with me? Is there really a good chance we will get back together? Help me please!