Just so that you don't say that again , tasqunevieさん, [君 きみ] expresses a very high degree of "intimacy" , one that probably only a childhood friend, parent, relative, lover or boss has.
愛している is also really heavy. It doesnt work too well in japanese , to them it will sound like the love one has for a religious figurehead/entity or for the person you'll marry :joyful: