This is my first post

I have been married for 2 years. My husband is from the UK and has just received his permanent visa to live here permanently (happy dance!!) but due to some unforseen circumstances-his boys won't be moving here permanently so he has to go back to England with them to finish off their last 2 years of high school.
Long story short-they are twins who will be 16 in Agust- and my husband actually believes they always tell the truth. My son is 20 and is an amazing young man, but he is a normal- so I know the pretty common lies for a teen etc.
My stepson was up @5:00 AM talking on his laptop today, I told my husband and he went into check, then came out and said "he said he was hot and couldnt sleep" mind you its a breezy morning today-no humidity- the curtains are out straight- so I laughed and asked him if he believed it and he said "of course-he wouldn't lie" and I said he is 16 and I have heard that line before lol and he said his boys never lie (I also work in the schools and know thats its common- and I dont mind him staying up during the summer once and a while, all my sons friends have done it) they always tell me the truth. So I said my son must have been a pretty rotten kid because he told lies once and a while at that age, and my husband said "I guess I will have to expect them to lie sometime in the future but they don't"
My jaw dropped open, I am amazed to think he believes them all the time. (Actually not that amazed- I finally asked him about the elephant in the room ie- his parenting style- and its basically to do everything for his children until they are 18- I mean he checks on them and gets them drinks and snacks when they ask, they have no chores ever, and he cooks them what they want when they want it- butters their toast for them, cleans their room, will go out of his way not to inconvenience them... it hasn't been a huge issue at this point since they are almost never here so I let it go)
I know kids and I know that my stepsons have lied before. There is nothing I can do to change my husbands mind that they lie- but am I wrong to think they can be that perfect? When my stepson was up I said how bad it is that he was so hot, and he started up immediately with excuses why- there were lights coming in their window that kept him up, I said the shades are light blocking and they should have closed them and he kind of laughed and said he will.
My husband and I are having some bumps in the marriage about some other things and its difficult because with the distance and costly airfares-- its been since last September we have seen each other --and its difficult to transition at first when the boys visit for the summer, and him and I to actually get used to each other again...
I know I have to let this go- they are only here until end of August but I needed to talk to someone- you know??