I barely consider myself "broken hearted t.A.T.u. fan". I've always been pretty apathetic about them altogether - I wanted them to be successful but I never expected it, so for the past year and a half I've just enjoyed their music.
I got into GaGa last year myself. Granted, I haven't followed her for a while.
And half of those songs of hers I haven't even heard! I only bought her US album - which is a rare thing. She's good enough that she made me want to buy an actual CD. It was an amusing self debate at Borders... Her song "Summerboy" was the one that convinced me personally.