I abused my gf

Yes I abused her not literally but verbally, I abused her and called her a whore and that almost broke our relationship... It was not like I meant that, it was just that I am used to use that word so often that it almost slipped out of my tongue and she heard it and got really very very angry and started saying things like I dont want you, you are just like my ex(he used to call her that), she said I never wanted him and I dont want you as well, dont want my love, my caring anything anymore... I was shattered that 1 tongue slip have costed her so much pain , anger ... and yes she is still furious about this...I dont know if this is really gonna lead to our break up.