@pumpkinpie0123 it means I love you so much lol I use it when people are cool or nice like you are it's like...
Example:
I'm making you a character in my book..
Random person; OMG thanks ILYSM
lol thanks... i dont think i wrote it very good my friend says its a bad book... idk im thinking of deleting it and just sticking with another ne... idk should i??