Reddit overwhelmingly says no, but there are couples that come back from this. Don’t just outright forgive and pretend it didn’t happen though. If nothing changes then yes, it’s very likely to happen again and easier this time. You need to have a long or series of talks. She needs to find out why she would do this. Then is this something that can be fixed? She will need to understand that she needs to regain your trust. That may take a long time, it might never happen. You need to put things in place to be able to trust again. Open phone policy? No partying if you or someone you 100% trust are not with her? Whatever it takes to make you feel safe in the relationship. You take the opportunity to better yourself as well. This isn’t your fault but a wake up not to get too comfortable in the relationship until she can make you feel confident. Work on you, and the relationship will improve for it, and if not you will be better for it. She has to know these are take it or leave it options. If she’s not willing to accept she needs to change a lot, then it’s time to walk away. Your relationship ended when she cheated. Look at this as trying to build a new one or walking. Don’t try to just carry on where you left off. It’s ok to forgive and try again. It’s ok to walk away.