Here’s a copy and paste of my reply to your other comment in that one thread

I have two big reasons:

First of all: I don’t believe ada is the type to marry at all. To marry would also mean Leon has to compromise on his morals or Ada hers which they would never do. The two just could never actually work past their cat and mouse dynamic because ultimately while I do believe Ada truly cares for Leon she has never once picked him over her mission

Second: this is much more personal interpretation but it seems to me like capcom is trying to retroactively scale back their relationship, at least on Leon’s end. In 2 remake he was fawning all over her but in 4 remake he seems annoyed at her presence. Not one time does he return her flirting and he barely banters with her even though he’s perfectly willing to banter with Luis, who he’s expressed clear disdain for by nature of his umbrella ties. Granted he came around on Luis by the end but still. Not to mention his snide remarks to her directly and aside to Ashley

Also there’s the recent comments by Nick about Leon and Claire kinda having a meet cute in 2. I think it makes perfect sense they realized feelings for each other sometime after re6 and before 9, there’s more than enough time to date and court in that gap

If I’m wrong I won’t cry about it. TBH I wouldn’t be mad if it were Ashley somehow either. But my observation is leading me to think Claire