Was i just a rebound to the girl i thought liked me?

I took a chans on a girl I liked it was my friends ex I did nt wana get in to it but I took a chans. We were dating for abt two weeks she told me I'm her everything want to b with me for the rest of our lives she so happey with me she said then boom in my face just the other night she told me she just wana b friends she is sorry she said and feels bad. But frm day one she was very distant frm me only holds me wen we in bed not wen we around ppl so I kept my distants nw cos she droped me I dnt knw if I shuld b her friend and still talk to her or is it a nuther guy or is she still in to her ex thay were together for ten years. Dus she want me or is it just friends