Fickle radiators

her necklace only has one diamond rather than two,
like the thermostat that shows the actual temperature,
but not the set, heat on may mean heat on, or not, like
the young man at the counter who likes how the pants fit,
until he doesn't, and leaves them in a pile on the counter,
texting as he walks out leaving the cashier wondering
where he learned his  manners, or didn't. 
the radiators are like that, unreliable and fickle,
leaving us cold all day, then suddenly running hot
all night as if they forgot their estrogen patches
on their bedside table when they left for their last
vacation.