Sooo

Honestly the way it was portrayed here is way over the top. No one likes to do/eat something over and over and over. Even a favorite meal is just something we eat slightly more often than other things but never something we eat every damn day.
Like I know this isn't real and I also know that some people are really dumb but I honestly cannot see that ever happening in reality.

The food story mentioning is just not it. I get their message, yet it's stupid when it's about loosing interest in people, like logically it's not related at all. It can be better justified if for exemple it was influenced by several psychological and emotional factors, idk; lack of emotional depth : he sees relationships as transactions rather than meaningful connections, they might feel unfulfilling. Thrill seeking behavior : constantly chasing novelty but losing excitement once things become familiar. He seemed so bored. Also entitlement or lack of gratitude literally : taking people for granted because they are easily available and he is a big shot, you know looks, he also a student who has a car and a decent apartment. Anyway the food like you said unrealistic. ╮(￣▽￣)╭

YES I completely agree. He doesn't even see the others for who they are, in his view everyone was the same color, no one standing out. It really gave the impression that he doesn't care about people, just going along with everything and everyone. I couldn't see any connection to the food thing at all.
If he was indeed scared of showing that he likes someone, then I would expect some pushing away, not letting people get too close, pulling away when they do etc. And not this strange behavior of going along with his gf's "demands" and then praising himself to be the perfect boyfriend. Like by which standards is that perfect? Someone who always fails at what they're doing is like the opposite of perfect.