Yes, in Jainism, if you are born in a devalok (heavenly realm), you can generally see and interact with other celestial beings there.

A few important points:

• Heaven is not moksha in Jainism. It is still within samsara.
• Devas and devis in the same heavenly realm can perceive, associate, and enjoy company according to their own celestial status.
• Their interaction is not like human social life; it is limited by their type of birth, class of deva, and karmic state.
• Liberated souls in Siddhashila are different. They do not mix, speak, or interact, because they are beyond body and worldly relations.

So, yes — in heaven you can see and interact with other heavenly beings, but this remains within the bounds of Jain karmic law and celestial existence, not eternal liberation.