You'll have to reformat your hard drive or the virus in you will continue to decimate your computer (husband). Using that same analogy, you're currently using cheap virus protection and spyware that's not updated and isn't even setup for regularly scheduled virus scans. Hence, the infestation of viruses and adware has rendered your PC useless. Only a disk reformatting or a new PC can help you at this stage.
Your love of your husband hasn't altered your behavior so not only does he need your love, but also your mercy and your grace. Full reconstructive heart surgery and replacement needed here. His pain makes him incapable of helping himself, so again his emotional health is in your hands until he's able to regain himself and see clearly. Until then, he's at your complete mercy which you've demonstrated can be dangerous for him.
If you love him,consider removing yourself entirely if you can't remove the infidelity that captivates you. Have the grace to protect those that can't protect themselves. He's owed that don't you think considering the risk he assumed staying with you after AP1? Spare him further trauma.
Here's a somewhat unconventional method of strengthening your boundaries. Should a handsome man come on to you, ask for a moment, walk away and whip out a picture of your three kids and your husband to remind you of your gift of family. This might excuse you from his presence and head home so that the five of you can watch a netflix movie while eating popcorn versus you and the kids wishing your husband was present, but isn't because divorce has precipitated a 50/50 split. Your marriage and family somehow needs to mean more to you, or at least enough to never put yourself in that position.
After reviewing your original post from 2015, I'm editing this one. If this AP, like your first one was largely based on physical attraction while still not being attracted to your husband, then you have quite a challenge and some hard decisions to make. Not being attracted to your husband and being attracted to other men may not be enough to fundamentally change anything so despite counseling and the pain felt by your husband, the want for something attractive might find you back her in 2020. Something has to give.
I used the word "want" as opposed to "need". People sometimes confuse the two or say they need something when in fact they really want something. The distinction is an important one in my opinion. If it's a want, you can in time reduce it's importance and recognize it for what it is, a desire which can be managed. I want a Range Rover, but I will be very happy with my Hundai Santa Fe. If I needed a Range Rover to complete my life and be happy, then that will mean paying a much higher price for transportation and busting the budget, which in effect may compromise spending towards prioritized items like my son's private school education, having a one week vacation instead of two weeks, etc. When what should be a want becomes a need, then issues abound. If you need to be attracted to your husband to stay loyal to him, then you seriously have to ask yourself if it's fair to you or him to stay married. He is who he is. He's either good enough for you to be loyal or he isn't. There's not in between or 95%. Have to be real and honest here for all involved. Kids too.
Question: Is this your 2nd affair or just the 2nd time you've been caught? Was AP 2 a one night stand, couple night stands or a FWB?
Lastly, WTF were/are you thinking? W T F R U THINKING? GET YOUR SHIT TOGETHER FOR HIM AND YOUR KIDS. Please.
[This message edited by Jorge at 1:44 AM, January 25th (Thursday)]