Oh my love, throughthestorm, I am so sorry this has happened to you, you are most welcome here, although it's not exactly a merry band to belong to is it? We are all in the same situation as you more or less, some of us are further along in the divorce process, but all of us are still dealing with the aftermath of an unfaithful, lying, manipulative husband leaving the family.
You are left feeling bereft, rejected, and worried about the future for you and your children.
Don't worry about crying in front of your youngest , I know you want to protect them from any upset, but it is a natural reaction, your life has changed irrevocably, and your mind is in turmoil, who wouldn't feel like bawling their head off?
It will get better, the pain will ease, and you will be happy again, of course you will, just not yet. I was married for 27 years, so I know exactly how you feel, over half my life was spent with one man, and this man deceived and lied and cheated with someone I thought was a friend, he has treated me as if I don't matter, my feelings, hopes and dreams for the future totally disregarded for someone he has known for a few months.
But, I am coming through the storm now, (see what I did there:) ) and feel a lot calmer and more able to cope with the shit that is going to come my way, ( and I know it will come soon enough), but I will decide when I am ready to deal with it, he decided when to leave, now I will decide the timetable of the next stage.
Your children will be your rock, gather your friends and family around you, get all the allies you can to support you, we can offer you advice and support from our own experience, someone will always come along who has already been through what you are dealing with, and can help you get through it.
Sending you lots of love and strength, hobbit, xx