The thing about relationships is that we can't control the other person. Not what they do, what they say, how they act. All we have control over is ourselves, and how we react to situations in life.

I don't know if what your girlfriend is saying is true or not, but for this to work, she can not go running to someone else whenever things get tough between you two. You need to make that clear to her. That if you two are having problems (and you will), that she is to - turn toward you, not away from you.

I do have concerns about her talking to this other woman for a couple of months. But, I think as long as she is remorseful and transparent (that you could check up on something if you have questions), and if you are sure that you still love her after what she did, you could give her another chance. BUT, make sure that you aren't going back just out of loneliness.... make sure that you truly, really love her and want this to work.

Taking care of yourself right now is very important. I saw on your other post that you haven't eaten in one week and have lost 10 pounds. Hurting yourself is not going to help anything. You need to eat, you need to be strong, to handle stresses in life.

So first, take care of YOU, and do that right now.

You are young. This is the time people are growing and maturing and changing. What you find good or acceptable now will change in ten years and be totally different. Your GF is probably pretty immature. She wants to have a man, or a relationship, any relationship will do. So when this young woman announced her attraction and "love", your GF decided to have another port in the storm. You have to decide if you are ready for the games or a GF who just wants any relationship so she feels secure. Young women sometimes, often, just want any relationship because it makes them feel good about themselves, or wanted, or valuable. And to me, what you write about what the GF wrote to the woman is very manipulative on the part of the GF. Any port in the storm was her aim and if it was false to this woman, it is likely false to you. What I am saying put more bluntly is -- if she was lying to this woman, my guess would be she is comfortable with lying to others to use them. So this is something she could be doing to you also. She may have played with this woman to make herself feel loved, valued, important but then decided to dump this woman to take back you. Do you see the games playing and the immaturity. Your gut instinct is telling you this. Take some time to focus on yourself. Take a week or two off from contact with the GF so you can think without her begging, which is manipulation. I was once your age and I had a guy beg to get back after he broke up with me and dated another. I was leery, my gut said no, but because my self esteem was low I did say yes. But I was angry and we didn't last. I broke up and this guy begged me for months to get back together. But I felt betrayed and hurt and the begging was really manipulative and self absorbed. Just some things for you to consider, it is your life and your decisions. You are young and more lovers will come into your life as the years go by. One will turn out to be a keeper, with maturity and values that you also hold.