I set the date as being made on may 30th 2004 as this was when it first appeared on Jazzuo's website but now I am seeing people claiming it was made in 2002.

Just wondering if anyone actually knows that this game existed pre 2004?

The wiki page says Sexy Hiking was made in 2002. The version that is on Jazzuo's website might be more recent and made in 2004 (because there are different blocks) but I think the first version was released in 2002. https://imgur.com/a/tPvF5

Edit: Since this is the wiki page of Getting Over It, it's possible they just took the date from the game, and it's also possible that Bennett Foddy was wrong about it. It's really difficult to find the actual date the game was published.

Another Edit: https://imgur.com/a/0q7lf I downloaded Sexy Hiking from gamemakergames and checked the properties, and it turns out it was modified before 2004.

So this proves it was made before 2004 or at least the original was but if possible I would like an approximate date like the month it was made.

Not exactly sure if anyone bu Jazzuo himself knows the precise date though.

In this interview he states it was '2002 or so': http://mouseno.blogspot.com/2009/06/interview-jazzuo.html