Surely its a Persecaria? Maybe its a cross with a variegated one?

I'd say Persicaria. Can't variegation be caused by viruses? I'm not that up on flowers

Many varieties of persicaria have that V-shaped or triangular "stain" on the leaf. If anything the markings are fainter than I am used to.

looks like the common persicaria; Polygonum persicaria. we have it in the garden and it is a native. [wildflower or 'weed']
when you say the pink flower has nothing to do with it, it does have a soft pale pink flower that is typical of this plant. [or did you mean the deeper pink flower in the bottom of frame?]