I broke a 🚭 promise to my girlfriend. How to comfort her?

2 years ago I promised her that I won't smoke cig again but smoked at my friend's wedding party. Today I told her that and she got really mad.

For about an hour I apologised and tried to solve. But now she started saying she want to end this relationship.. kinda dramas..

How to react and what to do? 🥲
I broke a 🚭 promise to my girlfriend. How to comfort her?
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