To be honest I don't think spock feels week. On second rewatch the love triangle feels very experimental than actual falling in love from spock pov I think we are going to get a story where Tpring will tell spock to go sow his royal oates or for him to date other girls before he commits to her finally which will lead him to the arms of a willing Chapel and he will realise it was a big mistake. Reason spock never called off the engagement to tpring. Korby may be introduced to mend Chapel broken heart. Although watching snw with tos. Tpring should have called off the engagement a long time ago before amok time. Tpring and spock come off looking terrible since he never broke up with her and she only decided to break of with him when his pon far cycle came along. Chapel is almost kind of the innocent party here however a flaw on her part would have been that she got involved with a man who only got with her by default or because his fiance wanted to take a break. I have been watching the Crown on netflix and for some reason Chapel in snw reminds me of a young Princess diana. Getting involved with somebody who maybe could potentially love you but in the end his feelings becomes unrequited. which is the situation we see spock and chapel in with tos.