You wont ever trust her for real again, if you are smart. And well, that will ruin any future relationship. It could go on for awhile, even years and be good, but she has shown you she can't be trusted, and that will eventually lead you into bad paranoid jealous possessive mind sets. Your relationship can recover and be fine if you both actually love each other, and you can trust her. If you still feel you should give her trust, good luck. Just don't try to fuck some other girl to get her back. Most likely your relationship will become unhealthy, my advice is to move on before it gets ugly.