Most Helpful Guy
How do you cope? Get up in the morning and go to bed at night. You have no choice but to cope and you're already doing it. Now, if you're really asking, "how do I feel better about it?" That's achieved through honesty.
However, you're not likely to achieve honesty at this moment given your emotional desires have just been crushed, but most things become known in hindsight.
It wasn't a good relationship and it was never meant to work... when you align your thought process with that statement, things will start looking up.
Most Helpful Girl
Know your worth never settle for someone who is going to wrongly accuse you of things just because of their own insecurities. Know that if he's willing to break up over something like that, he'd do that for something else too, it's a rude assumption and there's no proof. You avoided unnecessary drama, and be very thankful for that. Don't be friends, that rarely works, just focus on you and working to make yourself an even better person, go out have fun.