Buy one of these for 10 GBP. Give to partner as early Valentine present. Jot down following notes as contingency in case navigator happens to be asleep during crucial section around Antwerp ring road.

Folkestone. Eurotunnel to Calais
E40 Ostende
E40 Bruges
E40 Gent
E17 Antwerp
E34 Eindhoven

If you note the time and zero the trip-o-meter, you can even get statistics on your journey.