It's all up to you, but keep in mind that if you want to keep going on it takes two to rebuild a relationship and the person that did wrong to regain your trust and do the work.
It all depends on the relationship, nowadays tons of young people are quick to break up, they're young after all but when you have a mature relationship with an actual partner tons of more mature people are ready to work through it so again it's all up to you, review your entire relationship, how do you feel for her, how did you felt, why are you with her besides love, what is she bringing to you (receiving), is she contributing to your mental, physical, goal wellbeing or not ? Is she supporting you and giving you all the things that you need in a relationship (such as affection and so much more) ? Etc etc
If there is more no then you know what to do and for that know that it sure won't be the first nor last girlfriend you will have and focus on yourself and only you to heal from that, it's all temporary.