Whenever someone ignores me I will get really angry at them and might cause a scene or send them an abusive message to get them to respond, but if that doesn't work then I start to feel guilty and try to act nice to them so they pay attention to me.
If someone ignores me it invades my every thought ("do they hate me?", "what did I do wrong?", "will they ever talk to me again?", etc) and it actually makes me more attracted to them for some reason.
Is it like this for other people with BPD?