Green’s Dictionary of Slang

sucks to be you phr.

[suck v.1 (6)]

(US campus) an expression of commiseration.

[US]Eble Campus Sl. Apr.
[US]Eble Sl. and Sociability 101: I’m hating it, I’m serious, sucks to be you, tell me about it, [...] are various ways of expressing commiseration in the face of misfortune.
[US]Eminem ‘Drug Ballad’ [lyrics] Sucks to be you.