Christ. I know people like to joke and push for "action", but you gotta respect Meishi's self control. I think this is the few times I've seen an MC pursued so aggressively without it going overboard into yandere territory, and he's still holding firm. If I were him and had a girl 3-4 years younger going that far for me (in a situation where there is informed consent and legal age from both parties), the temptation would be overwhelming.
By the time the series is done he's probably gonna be known as "Rokutanda of the Steel Will".