I have heard there are mentally disabled girlfriends among my acquaintances.
I take up the examples.
1. While my friend tweeted on Twitter, his girlfriend said "Which is more important?, I or Twitter!?"
2. During his sleeping, the sweetheart tried calling him more than 50 times.
3. She threw his cellphone to him.
Though I don't know why she was irritated with him, her actions were beyond description.