@Artemis_Juri I think it's pretty amazing that y'all we're able to maintain a friendship after your relationship. Not many can do that and when you can you have a strong and long-lasting friendship.
(^。^)
I don't see how it would be your fault just because you're they're ex...
@Artemis_Juri you're friend really cares about you. And no, it wouldn't be your fault. From what you've told me, you've always been there for them. Why would it be your fault?