She wasted her chance in the perfect setting, this move would have charted her performance way above others .But time and time again, we see she expects Tomoko to take on the initiative [on matters she's extensively unaware of]. She nonetheless feels sufficiently compromised as to inform Tomoko of things related to their situation?Ucchi gang wins again
Yeah, her relationship with Yuu was actually bit harmful in long run, exactly because of this dependency that socially crippled Tomoko later. And while friend getting partner can decrease amount of your time together, so will other tons of stuff like them getting into sport club, studying to get into better school, getting a part-time job etc, learning how to deal with that and keep friendship together is how you become adult. And also learning to deal with both a partner and your old friends - and sometimes even partner's friends - is another skill that should be learned earlier rather than later, if possible. Without it, your friendship will just fall apart eventually anyway.I feel like Tomoko's advice is fine for the time being seeing as they are still highschoolers and even getting into college, but the conceit that you shouldn't seek your own happiness because you might lose your friends is naive and narrow minded.
That's just part of growing up, as you get older you tend to spend less time with your friend groups and more time for yourself, either because you have a career now that you focus on or you are starting your own family with a partner. It's nice to still have time to meet up with your old friends regularly but those halcyon days of youth will never return and that isn't necessarily a bad thing. You can't be afraid of change at the expense of growth.
I'm glad Tomoko acknowledges that it's a rather selfish demand/desire and that ultimately the choice comes down to the person making the decision but she's viewing it as a third party and not considering herself (maybe because she doesn't think it would happen to her?). She seems pretty smitten with the idea that her new friend group will remain with her through college and possibly after but that isn't a foregone conclusion. It's also a bit tone deaf considering she basically went through that experience already with Yuu going off to her own school and getting a boyfriend but they reconnected and Tomoko managed to make new friends without being dependent on Yuu.
That said, it makes a convenient excuse for Ucchi to decline the guy's confession given her one true love is Tomoko. The fact that Ucchi didn't immediately say yes after seeing how ripped that guy is already shows her "uterus" is spoken for and it's playing for the other team.