I felt much better after I was done eating the food that my boyfriend's mom cooked.
Did your boyfriend's mom get offended when you were done?
She looked happy but I couldn't tell what she was thinking. Maybe she got upset I ate too much.
You need to listen carefully to your body, and eat when you're hungry and stop when you're full. If your boyfriend's mom has a problem with that, sit down and communicate that to her.
She's being an ungrateful bitch, she didn't give me anything to eat the whole day.
It's important that you not force yourself to eat more than you need but also be sure that you are eating food when you are hungry. It may be necessary for you to talk with your boyfriend about how you are feeling so that he can deal with his mother.