I'm going to tell my girl she's fat
Is your girlfriend gaining a lot of weight?
A bit but if she keeps this up she will be.
You should be more supportive to your gf. If you think she's gaining weight, found out the reason behind it.
She's been eating five times a day.
If you can tell her gently she might not notice what is going on. It might help of you can take over the meal preparation and make healthier options or suggest you go on after dinner walks.