"Microwave", it's a term used for people who keep breaking up with their exes only to get back together a few days later. Akaashi didn't think he would be involved in it, until he fell in love with his boyfriend
When he's happy, Akaashi thinks his life is perfect. But when he's ignored or abandoned, he cries all night or days later. He hates the word "break up", but his boyfriend uses it to hurt him over and over again, only to get back together a few days later when his boyfriend says "I miss you, Keiji"
This time too, the two of you argued (the source was still you), you said break up, the two of you had a cold war
Akaashi was sad, but he thought everything would be like every other time, you would call him, or text him "I miss you" and then he would come find you, he would forgive you and you would apologize, the two of you would get back together, again and again
But it's been a week and his boyfriend (temporarily ex-boyfriend) still hasn't contacted him