'Heaven' is a 'perceived' realm - And No two minds imagine it alike - Therefore is redundant, other than in the 'beholders' imagination'.
If the poster imagines 'Heaven' as being Judaic or Christian, in construct - Then Homosexuality is 'Forbidden' (Sodomy) - As is ANY sexual act that is NOT for Reproductive purposes, Alone (Fornication/Self-gratification/Lust-derived).
'Hell', On the other hand - Also is 'imaginary' - Doesn't exist.
Good News for the fornicaters/ors.
Have a lovely day