If you truly love each other I believe you can work it out. I think everyone deserves a second chance. Perhaps it was just that she was too immature at that time. Of course this depends on the situation. If she had cheated on you multiple times, and continue to do that, that might be a different story. Just take it slow and easy. You will both have to learn to trust each other and start fresh and new if you're going to do this. Are you both still married to each other? If you are, put all things behind you and start fresh and make the rule there's no bringing up the past on either side. However if you are not married, I would not remarry her until you both can trust each other. But then again maybe you don't want to remarry at all if you're single. Given that she has come back to you and asked to try again I assume, then perhaps she has grown up now and sees what she had and misses that. Maybe now she's ready and more mature. Time will tell. I wish you the best.