Your variegated plant works twice hard to produce the same amount of material - the whitened part of the leaf lacks chlorophyll - and doesn't contribute. So - the more white on the leaves the slower it grows (and blooms).
Give your leaves a drink of a weak fish emulsion to green them up a bit.

Thanks, I'll try that......I have a baby Romance that is almost completely white.

I have several variegated and I have two that have been taking their sweet time , my variegated Standard Trailer "Cherokee Trail" and Semi-miniature "Green Dragon" .

The Cherokee Trail has a lot of white .

So this was helpful for me too , thanks .

BlondieJan - do not separate your Romance baby until it greens up. Fish emulsion helps.

Philip - Cherokee Trail is a tough old bird - it will give you babies sooner or later. But - if you have a choice - either take a green leaf of it - or way better - a sucker. It is a slow growing plant - and it blooms very sparsely - but it is a beauty.