I think after two months you've progressed past just leaving things.
You have. He was rude, and you deserved better than this.
HOWEVER - you have learned a valuable lesson to not just judge on what a person says, it's about what they DO and how they are LONG TERM not in weeks.
I know you want to think that this was a serious relationship, and at 2m in, you can hope for it, but you'd be wrong to believe it actually is.
2 months is 8 weeks, as someone else pointed out, even if you saw each other every other day it's a couple of dozen 'dates'.
Getting to know someone is not a numbers game, it's not about the number of hours you spend with someone, it's about the quality of the time, seeing them in different scenarios, how they react to this and that, what they think of such and such, allowing time to be as one and as individuals, seeing them in different lilghts and trusting them enough to see you as you are too.
Anyone can be perfect for a few months, very few can be right for the long term. There is much warning about Future Faking, where the person you're dating is projecting your relationship as more than it possibly can be, given the longevity, but we too can future fake ourselves if we are not careful and allow ourselves to get swept up on the emotions/hormones etc.
Online dating has a lot to answer for, the candy store mentality, the pick up and drop etc, it's not a decent way to treat others.
When I was online dating I quickly learned not to take anything seriously until it was. Sure I could see potential, but it means nothing.