We all make mistakes in life, and when we realize them, we repent and try to make amends. It is only those people that admit they were wrong and try to do right that actually make it and get a second chance. Despite the wrong one does, I believe when you totally/genuinely change yourself, you will be given a second chance and love does deserve a second chance. People change after a while either for better or worse. Let me give out two options for you to consider:

• Give the person a chance to talk to you and then try to observe him. But please, in the meantime, don’t let or allow him to move back into your life just there and then. Never use your emotions or feelings over your head. Don’t give him money or send him a gift or card for his birthday just yet. Take it easy; he may just be lonely and is looking for a place to start his life from, and as soon as he gets his feet back on track, he may just break your heart again. He may have tried everywhere and failed and so decided to come back to you, or even worse, you could have been last on his priority list. This point will apply to someone you parted with in a civilized manner.   (Related:  How to get a divorce from abusive husband?)
• If your Ex was abusive, and you still have a soft spot for him (Related: How to let go of an ex?), then I am afraid you may just end up messed up again. Abusive men are sick, and it takes a lot for that person to change. Prison, medication and your love may not be enough to help him change. So don’t open this door so easily. Yes, you have to forgive and move on, but you are not obligated to take him back. Be strong and don’t allow pity to overcome you. He may also find that you are married or seeing someone else (Date someone again), so he has no right to come and wreck your relationship as he had his chance. If this is the case then there is no need really to undo all the effort you have made in building your life back. It would be a good idea to try and maintain a healthy friendship if that is alright with you and your current partner, but always draw a line about what is acceptable and what is not. This is good especially if you had children together. And you never want to have an intimate relationship with your Ex.