This chapter was a whole lot more typical of (the worse of romcoms) than the author either realizes or is willing to let on: specifically where Maria is concerned, Toma is playing the dense romcom MC role almost to the hilt. He saw the two of them ready to come to blows right in front of him (obviously over him), he's never seen them make up, and he still thinks it's a good idea to bring up the rival of the girl who'd come to care for him--the girl who still doesn't trust him.
Then he asks Maria if something's wrong. That soup should be heaven's punishment upon him for being so stupid.