wait did doha say i love you to bada fr or was it to get another ending of some sort????

its a cliché line that doha uses to make killer try to kill them so he can kill him quicker i think

Having sex and confessing your love for someone are both death flags in horror films/movies, so it was to make the killer attack them, so Doha can kill him (and continue fucking Bada), thus giving them some more time without having to worry about the killer.
If it was for a potential new ending, they'd have gone with Bada's idea of letting the killer kill them while actively having sex lol. But ofc Doha wouldn't be on board with that.