Thanks for not going in on my misspelling of Raph first of all
Writing on my tablet and I did cringe when I re-read it.
I think maybe the conclusions above like other posts on the forum throughout the season are a bit critical. Too many expectations on a 21 y.o on a reality tv show maybe? And for a boring episode no less. I agree with you on that. I'm also not a mind reader nor a psychologist so can't say with authority this is exactly what was going on in his mind.
My observations come from the sense that Raph is a deep analytical thinker. He really seems like he thinks things over - not even in a bad way - some ppl mull over their actions before they do them. So it seems surprising when he does things like pick Sue over Issy, or play a prank on his most humourless friend - and not think he has thought about the outcome.