Yo -
STOP OBSESSING!!! Or at least, stop texting him! Take the battery out of your phone if you have to!
But also - this does bring up something I've been thinking about in your sitch. How would an international divorce work, since you are currently in one country and H is in another? Which country would have jurisdiction? Which country's laws are more favorable to you? How could you enforce a support order?
I am still hoping you would never have to use this info, but it seems to me it would be wise to get some legal advice just in case. (For example, if the laws in country H is currently in are more favorable to him, would it be a mistake to move there with the boys and then possibly lose in a divorce? Similar issues come up here in the US, since different states have different divorce laws, and which state you file in can have a great bearing on the divorce settlement.)
Knowledge is power.
But STOP texting him, okay? Just come here and vent when you get those anxieties, okay?