Usher's Ex Chilli & Tameka Foster Confrontation

According to In Touch magazine, Usher's ex, Chilli, and fiance Tameka Foster had a run-in at the singer's mom's house. Chilli (36), who remains good friends with Usher's mother Jonetta Patton, is said to have infuriated Foster with her presence:

Tameka walked in and hit the roof. She screamed at Chilli, “Doesn’t your boyfriend have a mom you can visit?” Chilli just told her to grow up and walked out laughing.

Unlike most, I don't despise Tameka - I have no real reason to - but she needs to go sit down somewhere if this is true. There ain't nothing wrong with Chilli visiting Jonetta. With all the drama surrounding Usher and Tameka, I'm wondering how long their relationship will last...