There is this story that someone posted...you would think I could remember who or where...but it is about Spoons.
In a short version, it refers to our energy as Spoons. You take a handful of spoons and for every daily act that you perform you take away a spoon. Now that includes waking up-one spoon, getting out of bed-another spoon, walking to the bathroom-another spoon, brushing your teeth-another spoon, getting ready for work-another spoon, and so on and so on. By lunchtime most of our spoons would be gone.
I will try to find that story or maybe someone knows what I am referring to.
I have used that example to explain to my family and close friends what it is like for us to deal with trying to conserve our energy. Maybe you could use that for you BF.
I hope this helps some. I know I explained it to my ex and lets just say he didn't get it...that is why he is now the ex.