No Playing with Fire! My Secret Sex Friend is a Firefighter

Ms. Nishino, who works as a receptionist at a fire station, has a crush on Shiina, a handsome firefighter. She thought she was too plain for him, but one day, during a drinking party, he suddenly approached her and said, "I was dumped. Tell me that you'll comfort me."
"Why would he say that to me? What did he mean by that? I don't understand, but his eyes are so serious..."