You have had a year to get over him and deal with the pain of his infidelity, and bringing him back in now will only set you back. If you want to move forward and attract the right man towards you, keep doing what you have been doing. Put yourself first and listen to your instincts.
If he is not learning from his mistakes and continues to cause you heartache and pain, it is time to move on. Respecting yourself and having boundaries is always the right choice.