To say ' long time no see'= Sudah lama gak ketemu (use gak = no in informal situation) and Sudah lama tidak bertemu (use tidak for formal situation) 'I'll miss you' in Indonesian,too = Saya (I) will (akan) me-rindukanmu (you also can use "kangen= rindu" di Indonesia

Hi! I'll try to answer you. long time no see = lama tidak bertemu You can say it after any long period not to see. There's no different expression. And for this one : I'll miss you = saya akan merindukanmu Hope this help you.

Long time no see = sudah lama tidak berjumpa / lama tak jumpa. l'll miss u = saya akan merindukanmu.

Terima kasih!

Long time no see = Sudah lama tidak bertemu/berjumpa i'll miss you = saya akan merindukanmu (formal) or aku akan merindukanmu saya (you can use 'saya' in formal situation) aku (informal situation). Terimakasih :)