A few months ago my girlfriend and I broke up for about three to four weeks. She admitted that she spent the night in a guy friends bed. She insists that nothing happened, etc. etc. I confronted both of them separately and each of them acted calm about it and both stuck to the notion that nothing happened. My question is why would she say anything to me about it, putting herself in a position of having to defend her story, versus saying nothing and not having to deal with me asking questions? If she had said nothing to me, I wouldn't know anything about it. So should I believe her that nothing happened because she came right out and told me about the night? Or is it possible she's lying to me and for whatever reason wanted to tell me this "story", thinking that since she told me, then why would she lie? Very confused...help appreciated.