Lyric discussion by Jadenisgerardsbae 

Cover art for Cancer lyrics by My Chemical Romance

The album "Welcome to the Black Parade" is about a cancer patient who is dying and is reliving his past. This song is "The Patient" telling his loved ones or one that he doesn't want to leave them. But he's dying, so he has to. He's pushing them away (he statesmen he will not kiss who he's talking to) because he doesn't want them to be hurt by his death. This song is deep and just amazing

@Jadenisgerardsbae that makes a lot of sense actually

@Jadenisgerardsbae I think “I will not kiss you” is a statement that he is on chemo. They discourage a chemo patient from kissing others