Exactly. I just couldn't feel the seme's love. It felt like the uke had deeper feelings for the seme than the seme did. Even in the last chapter i couldn't feel any love between them. Just as you mentioned, there was this constant feeling of betrayal and doubt lingering in the back of my mind. I wish the author showed us more of the seme getting jealous or showing possessiveness or interest towards the uke. I mean heck, even though it was from the seme's perspective, i could only feel the uke's love rather than the seme's. It seemed more like lust on the seme's part and unrequited love on the uke. But atleast they're together now.
Also this is just my personal opinion but i hate this troupe of mc's (be it seme or uke) banging every living being in sight just because they were hurt or because they wanna 'annoy' their love interest. Like please have some standards and more self respect.
This was not half as good as "Ookami-kun wa kowakunai", don't @ me. There was this lingering feeling if betrayal throughout and the "there wasn't anything else we could have done at the time" felt like a huge cop-out.