Okay here's another idea
Bakugo x Todoroki
Based on an rp I did a long long long time ago
Arguments between Todoroki and Bakugo can get very intense, very fast. On the off occasion that they occur, they often last a good few days to even weeks, even when they tear both males apart and trigger one of them into awful memories.
Once, their arguments got so bad that Todoroki stormed out and started driving, knowing damn well he was not in any state to be doing so because when he got upset, he got overwhelmed and lost focus
Long story short, a major accident occurs, leaving Todoroki hospitalized and with a low chance of waking up for a while. This gives Bakugo far too much room to think about just how much Todoroki means to him, and it breaks his heart to think that this could have been avoided
Also in the rp a ring was found in Todoroki's pocket because he was planning on proposing but then the argument started and y'know-
But that's completely optional