I screwed up

out of anger, i talked badly about my boyfriend on twitter. i vented on there thinking he would never find out. unfortunately he did. i also flirted with some guys on there, but it was nothing serious. just joking around. well he didn't see it as that, and i dont blame him. but at the same time, i'm 90% sure his ex girlfriend is the reason this is happening. she hates the thought of him being happy without her, so she's tried multiple times to screw up mine and his relationship. anyway, i think she showed him my twitter that is now deleted and he got angry. we're still together because he claims he loves me and wants to still be with me, but is still treating me like a dog. nothing i say is good enough. he is still angry, which is understandable, but when is enough enough?