“get together” means a great many things.
No one really knows when Mulder and Scully actually conceived but it would have to be somewhere around late season 6.
In the first film, Carter teases us with an “almost” kiss, but all suggestions and tension aside, Carter finally closes the lid in the last episode of Season 8. Its a beautiful and in my (and the majority of the x-philes out there) opinion should have ended the series, alas they didnt but the final moment of Season 9 is worth the sludge a Mulder/Scully fan must go through.
Thank you, Delirium, for informing me of this question.