The OP told her husband that she wanted to spend time as a family. That was the time for him to say that he had other plans.
When the OP told her husband that they needed to move the chair, that was the time to tell her he couldn't/didn't want to/had other plans.
Quite frankly, when we have free time, it's spent as a family. We may or may not have others with us, but DH and I do not do things separately out of choice. There is no one else I would rather spend my time with, and the same goes for him.
As for the argument that she should just trust him...
I'm all for trysting someone until they give me reason not to. The fact that he was gone for 3.5 hours and still didn't get his haircut, makes me think that he's lying.
Is he having an affair? Did he choose his buddy over his wife? Did he want guy time? Did he want to get away from a nagging wife? We don't know, but the story he told just doesn't make sense. He more than likely has lied, which means that the OP has every reason to be mad. Even if he didn't lie, I'd be ticked if DH went for a haircut, was gone for 3.5 hours, and still came home without one.
Maybe she's a nagging wife, maybe she's not. Even if she is, he's still in the wrong for lying. Does anyone really think that his story sounds remotely legit?
Unless there was only one vehicle between the OP's family and the buddy, and it was a standard cab truck, there was no reason why the OP, OP's DS, OP's DH, and the buddy couldn't have all gone to the barber. The OP said that she didn't care what they did, as long as they did it together.
If the whole problem here is the hours of operation of the barber shop......Then the hours of operation of the barber shop is the least of the problems in this marriage.
The fact that the OP is unaware of a place in the area that is open, plus the fact that he went and
still didn't get his haircut makes his story sound fishy.
I'd want to know right off the bat if they are open on Sundays. Around here, salons and barber shops are not usually open on that day.
If that question passes the test, I'd want to know if 90 min.+ waits are normal at that place.
If his story about getting a haircut turns out to be true (which I REALLY don't think it is... which is why I'd double check on the basics), she could at least dismiss the idea of an affair and then try to find out what it is about her that causes DH to not want to spend any time with her. Hopefully he can be honest without fear of judgment or anger... and OP can see if there are things in her attitude/personality that can be changed so that he does want to spend time with her.
