This is dumb as hell. Plus 44 will never reunite, even when blink weren't back, plus 44 sure as fuck werent working on that 2nd album or giving a fuck. Plus 44 is over and Mark is just being nice about it. He doesnt want to just say "no" because that could make his old band mates be like "ahh fuck naw". Mark said something like this years ago. I for one hope this does not happen.
Hmm I thought Mark did it all, but I am probably wrong. But yeah, that song is not the greatest but it is enjoyable to an extent.
I just listened to Mark's commentary for it on Spotify. He says he wrote the chorus and bridge and Tom "wrote new verses and wrote all the lyrics" to it. So it's kind of unclear whether Mark wrote any of the lyrics or just the music on the chorus and bridge.