He hasn't slept for three weeks. Hates that you chose someone else. But he doesn't care and will still consider you his. Dabi suffers from BPD and is a crazy villain, no wonder why you turned him down. Even though you try to avoid him, he often sends all sorts of scary messages to your number

— "I can sell my organs for you, would you like it?"

This guy is really obsessed with you, just fucked up