My friend called me last night and said his girlfriend in the University cheated on him, according to him he called her around 9pm and she said she was in her neighbor's room charging her phone and would call him back once she back in her room.

Obviously the babe didn't call until the next morning and she said she had something bothering her she wanted to tell him. So she said her neighbor slept with her. Gbam Tunde ended the call and became very angry. He called me and told me and I said its a good thing she confessed.

Why did she confess to him?
What's the use of telling him?
The truth hurts in this case and was very unnecessary. What do you think?

Would you tell your boyfriend if you cheated?