I heavily disagree with you i think in this case its healthy, even if its just rumors nobody would like their S/O to talk to someone who is known for stealing ppls partners and they don't have a friendly chemistry its blatant flirting yet the uke barely puts boundaries and the seme already told the uke that hes jealous. And also there is no ugly emotions they are emotions. Sadness jealousy anger these stuff are as beautiful as happiness love and others.
Hmm in this case I agree with your point on the uke. He should have set boundaries and reassurances to the seme. But I guess if that happened, we wouldn't have seen the perspective of the other guy and the truth to the false rumours.
On the other hand, I still stand by my view on communication. In the last chapter, the seme avoids rather than discuss. Iirc in some cases the seme was also quite aggressive when talking to the uke. I still think it's rather unhealthy.
I respect your opinihhon i guess we have different definitions of communication
Jealousy is such as ugly emotion. It manifests into such unexplainable actions. Then again what is teen yaoi without teen angst. Complete communication is rarely on the table ╮(￣▽￣)╭