This actually makes sense. They're in high school, so of course there might be multiple people who like the same person. Nothing wrong with people taking a chance at finding romance for themselves. Doesn't make them the bad guy as the mc is not in a relationship yet. Thanks for the chapter!!!
This guy had his chad moments earlier in the series but since then seems very blue pilled. In the real world the first girl to confess to him would have him till she tired of him... thus being the loser in the harem pursuit.
PS: I'm beginning to realise if the MC is a cuck no one wins in a harem manga, it seems some girls simply lose the worst (the "winner").