not consummated = not indisoluble =/= invalid

like when kings married but waited years to consummate it: it was valid, but before consummation, it could be dissolved.

besides that technicality... good question.

related questions:

what if they never had intercourse without anticonceptionals?

this would separate the procriative intention from basic trust about not having disease.

do couples today understand the vows well enough to give consent?