Sometimes people have already left, so to speak, just not physically. In their mind/hearts they are already gone. Therefore it makes it easier for them to find someone else and move on. It could also be the rebound effect, meaning that when someone breaks up etc., one or both parties find someone else straight away to fill the pain and void they are feeling inside. That is only a temporary fix because there is still healing that needs to be done. It usually ends in disaster, and then causes more pain added on top of the already existing pain.
I was married for 26 yrs. and I hear what you are saying about the pain. There is not anything you can do but ride it out, so to speak. It is very much life changing and devastating. One does not really understand until they have walked in your shoes, so to speak. I know there are those that will say to move on, but the truth of the matter is...it is easier said than done. There are different stages of "grief" that you will go through and yes I did say grief! It is very much a loss. There were times I hurt so badly that I thought I could not take another breath. But I did. I, like yourself, have children that depend on me and they are my responsibility to raise and care for. They also will, and do, feel the pain and loss that has happened. It took a very long time for me to want to date or see others. As a matter of fact...about 6 yrs. BUT...the best thing you can do is to Love yourself and your sweet kids. Do your best to make a new life for yourself and them. Most of all..be honest with your kids. Kids are very smart and they know when their Mom is hurting...its a natural thing and part of the process. If you can find a Divorce Recovery to go to and through, as well as for the kids to attend also, it will be a wonderful, helpful and healing thing to do. Best of Luck to you! There are some good people on this site and you can find support if you need to talk.
Respect and consideration are important things. Sometimes others can read things into something harmless and it is misconstrued to be something other than what it is. Just my 2 cents...
RE: makes makes you sweat alot
Doing the deed....and martial arts...