as shortcurts numbers are often used instead of letters (like gr8) and shit.
in italian 6 is sei and sei sounds like "you" (if u pronunce it like in latin languages) so i think it means you are beautiful even tho as u said bella stands for a woman.
tho im not sure since in italian you its voi or smth:p. and "lei" is "she" which is pretty close to "sei"
its basically what imabob said, 6 (ses) is the verb 'to be' and also the number.. same pronounce.. dont need to put a 'you' in the sentence because it doesnt requires
And 6... well that has to be 6 ! :P
in italian 6 is sei and sei sounds like "you" (if u pronunce it like in latin languages) so i think it means you are beautiful even tho as u said bella stands for a woman.
tho im not sure since in italian you its voi or smth:p. and "lei" is "she" which is pretty close to "sei"
proud of you son.
GTL