How to deal after being cheated on?

I found out today that my boyfriend cheated on me and I don’t know how what to do now, it’s completely ended but does anyone have any ways to overcome all of it and everything after being heartbroken? :(
Help would be much appreciated thanks
Updates:
6 mo
So let me just update: I’ve honestly turned my life around and am doing way better, and I think it’s annoying him that it’s not affecting me much anymore and also turns out he’s been spreading rumors about me
How to deal after being cheated on?
3
2
Add Opinion