Harry liked to hear Ginny giggle. He liked it when she was happy too. Though the topic was nothing that really mattered anymore, he was happy to take happiness where he could find it and was happy to see Ginny happy even over something like the sacking of Umbridge.
"Maybe," Harry agreed quickly and readily. He wasn't sure what he should say though. If Ginny was asking him as a friend, he would be a shite friend to sabotage her dating Dean because he fancied her.