Does jainism forbid two souls after their human life from meeting in heaven strictest answer possible no or yes even if one soul has committed a sin of watching 18+ content Copy message
No.
In Jainism, there is no absolute rule that two souls are forever forbidden from meeting in a heavenly realm after human life. Their rebirth and meeting depend on karma. A sinful act, including lustful or improper content, creates pāpa karma, but it does not create a special universal ban that makes meeting impossible.
Also, in Jainism, heaven is not moksha; it is only a temporary heavenly birth.