@GoldenSpin Page 1 the word "unconsciously" is misspelled. Pretty much this popped into his head when he saw her dad: It was at this moment Senpai realized he fucked up. Thanks for the chapter.
On the last page, he's not saying that he won't cheat on her again (because he hasn't done it at all), he's saying that he'll be honest with her and stop avoiding her feelings, or something along those lines.