I'm sorry Sephora, but I have no idea. Stuff like this is reeeeeally difficult, because the appropriate response depends on how close you two are. I'd suggest trying the translator on Dictionary.com, but double-checking the kanji beforehand (whatever you do, don't use 'anata' for you or he/she will go like this ->
.....learned that one the hard way.........) Sorry I can't be of more help.