Yes I would because if 당신 truly 사랑 them and thu truly 사랑 you, 당신 will try to learn their language and they will appreciate how fast 또는 slow 당신 learn.(which is exactly what I would do)
Of course!! If 당신 really 사랑 someone, then that doesn't matter if that person is deaf, mute 또는 whatever!! (But that would be helpful if 당신 learn signing...)