Hi Mia it is internet slang for hugs and kisses.Usually xxx are kisses http://www.internetslang.com/XOXOXO-meaning-definition.asp

Hey there, XOXO means lots of love and kisses :)

X's mean kisses and O's mean hugs. I used them on paper letters when I was a child in the 1950s and they are probably much older than that.

Xoxo means hugs and kisses.