Ah time to rant—
The uke is fucking unbearable and whimsical. I get why the uke's thinking the way he thinks because I understand his personality. He likes to avoid things which are troublesome, doesn't face issues and gets swayed very VERY easily. He rarely understands himself or his opinions, he's so unsure about everything it's easy to influence him with just a couple words. So yes. It's built into his character, we can't fault it. (doesnt stop me from wanting to stab him for being wishy washy tho).
Ending spoiler:
After switching btwn the two semes for the nth time, he got conflicted about his own feelings. :) and instead of facing the issue, he decides to leave a letter to each and runs away to an isolated island. (Cuz yes, that helps both of the semes who've already abandoned MULTIPLE, i repeat, MULTIPLE times) idk fuck that indecisive uke
Happy ending ?