I am so sorry to hear this!  This is too weird that he waited until you were post-op!!!  Did he say "why" he cheated?  Have you confronted him about this? 

There are LOADS of WLS patients out there who have said that their spouses (or significant others) are worried that once the patients loses weight, they'll no longer be interested in their spouse.  Sometimes this is true but, in most cases, it isn't. 

Anyhoo, on for my guesses:

1)  You obviously are looking better, feeling better and have maybe gained some self-confidence.  You've jumped "off the shelf" and that might worry your husband.  He might have been concerned that you'd eventually cheat on him, ask for a divorce, or something and wanted to "beat you to the punch", if that makes any sense.

2)  OR he might be trying to "keep you in your place" because you ARE looking better, etc.  In other words, maybe trying to make you feel unattractive (when in reality you are probably feeling more attractive than you have in a long time).  Again, this would be in answer to his paranoia that you are going to leave him. 

3)  One last thought.....have you been paying the same attention to him as you did before surgery.  Yup, I know there's a recovery time as there is for any surgery so that shouldn't even be taken into consideration.  But does he feel left out?  Has this become "all about you"?  A lot of times, sudden weight loss can go to a person's head.  While self-confidence is fantastic, self-absorption and self-centeredness is usually what drives spouses, friends & family away. 

Anyhoo, don't know if I've hit on anything that might be helpful.  Just trying to look at it from both sides here. 

Please keep me posted on how this is going for you.

Best wishes!

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Thanks friends

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Were to begin for me also. My husband just left me two months ago. I thought that through this whole situation that he would be the one person that would stick by me and be proud of me. But that didn't happen he left as drastically as my weight came off. I know we will never be together again, but I'm afraid to put myself out there for love again and I want to be loved so badly. I'm so afraid that going through this will make me bigger again.. :( tears well up each time I think about it. I do not want to be that unhealthy again and definatly not for a relationship to come back into my life.
I wish you all the luck and love in the world. Please know you are not alone in this thing.
Hugs
Paula

I think for women the change in hormone levels can really play with our mind. I went through a period of feeling like I was jus****ching my life, like I was seperate from it somehow. It was scary. It lasted for @ 12 weeks, but now I am feeling much better. Hang in there. Dont make any major descions. Just give your self time to adjust

You need to get out of that situation asap. He is not doing you any good and is threatening you. Sounds like he is getting dangerous. Welfare will help you and so will the police. They will help you get back on your feet with the kids and also help you with an education if that is what you want to get yourself free of all of this. I know it sounds scarry, but if he is acting as bad as you say, then your running the risk of him seriously hurting you and possibly your kids. Run don't walk to the nearest exit with your kids, never mind anything else, the police can always come back with you to get the things your family needs. Make sure you continue to see a shrink and maybe it would help your kids to as well. As for your husband, it is his problem not yours, let him get his own help.' Jealousy is not love, it is a form of control and a very dangerous situation often comes out of Jealousy. That is my advice, Nancy