paul bakewell , 35 , from walsall , mids , secretly designed a poster which he then had emblazoned on the 20ft-tall advertising hoarding and covered over .
the dad-of-one arranged for his partner tara barber , 32 , to be driven past the billboard by her boss who pretended they were going to a business meeting on friday morning .
but the pretty hairdresser was left speechless when the car stopped at the 30ft-wide poster on the side of the a34 in walsall , west mids .