Strict answer: No, not in the way you mean.

In Jainism, “heaven” means devalok—the realm of devas/devīs, not liberated souls. So:

• Liberated souls (siddhas) are not in heaven at all.
• Heavenly beings can see or interact in their realm, but there is no permanent personal reunion like worldly attachment.
• Any meeting there is still temporary and karmic, not an eternal relationship.

So the strict Jain answer is:

There is no eternal “meeting of souls in heaven” as people imagine. Heaven is temporary, and liberation is beyond heaven.