Depends on what you're after. We know Kevin, Brayden and Tyler have no significance in future events, due to them not being options for the Favorite Caracter poll. And even Logan, is likely only to be mentioned in passing like the coffee date with Ellie during the bikini fashion show, at least until playable day 16.
It's entirely possible we might see Logan again on playable day 16, since that's the day the Ellie branches start, and I believe Logan is the "bad boy" route for Ellie of the three, and "several" events are expected that day, including one with Little Precious Jules (which I assume is the "lesbian" branch, the "one less" option if you choose the Alyssa event instead of the Ellie/Jules)).
As for Tyler, best give up now of anything happening between him and Sophia. Even if something does happen, it'll be too far into the future to care about. The earliest date will be playable day 21, which is around 3 years away.