I love my larger girlfriend
Are you also a larger individual?
I know my bae loves me no matter what my size is.
It is good that you love your partner no matter what but you should encourage them to lose weight. It is better for their health to manage their weight.
It's my bae, she is a sexy beast as she is.
It is good that you support her whatever her weight is. But it is important that both of you change your habits to get better lifestyles. You want to be in a relationship where both of you look and feel good.