How does a girl-turned-girlfriend stake her claim on your cockpit? The classic pack-of-tissue-paper technique won’t work, because the freshly minted boyfriend will instinctively use it to wipe fresh bird poo off his car’s precious paintwork. (He loves to wash his car, too.)
So she hangs her cardigan on the headrest, or puts her sunglasses in the doorbin, or places a pair of slippers from her 10-pair collection (her shoes are like his tyres) in the footwell – or maybe she does all three.
Leaving her iPad in the boyfriend’s car is okay, but leaving spare sanitary pads in the glovebox would be too much for the boyfriend.
The driver is expected to accept his significant-other co-driver “attached” to the passenger seat alongside. He specified this nice new accessory and paid the price, so he has to install it, warts and all.
If and when the next nicer accessory comes along, the relationship might get complicated, but that’s another story.