I don't love him anymore means wo bu ai ni le
I loved him, but now I' don't means wo ai ta dan shi xian zai wo bu ai ta le ,ke neng yi hou ai ta ,ye ke neng yi hou bu zai ai ta
I thought he was nice, but I found out he was cheating on me"?
means wo yi qian ren wei ta hen hao ,dan shi wo fa xian ta zai pian wo