There certainly don’t seem to have been joint many posts recently - she’s been with molly and Tommy most of the last 2 weeks. However I’m not sure how they can break up - it would make a nonsense of all the protestations of love and make them look foolish.
And yes - there is just no way these women stay so thin and eat that food - they are either ‘disposing’ of it in some way or they never eat it. I suspect they are simply paid to eat in certain places. They order the full menu so it looks good for the photos. Instagram seems to be full of undisclosed ads