Getting back together after cheating?

I cheated on my boyfriend by kissing another guy. I regret it and have honestly decided to never do anything like that again in a relationship especially after seeing how it hurt my boyfriend. We are broken up now but my ex said that there is chance we could get back together in the future. i want to do bad the trouble is waiting and he said not to get my hopes up. I am really trying not to do so but I get depressed when he doesn't text me one day. I just need some advice please
Getting back together after cheating?
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