Possibly exchange something that is special to each of you, maybe write a heartfelt letter, try to keep in touch and possibly visit one another in the future. Don't make it a goodbye make it more of we will see each other again and make a pact to try and stay in touch - become penpals writing letters, emailing, texting etc.
say farewell, von voyage, paalam, bye bye...
make a fun unique handshake with the person do the hand-under-chin wave like they do in little rascals
Farewell, Adieu(French), Arrivaderci(Italian), Auf Weidersehen(German), Do svidaniya(Russian), Taraaa, Tatty Bye, See you , Cheerio.(These 4 Casual English) Mar Sin Leat(Scots Gaelic)
see you nexttime
The professional way is to say sincerely.
you say goodbye in French
Kra adamfo
I did not get to say good-bye to my friend. Good-bye Jack!
call them.
Um, no.
Adeus, meu amigo
Lah Gorn Peu - an
Dovidenia? I think, but I believe this is formal, I'll have to inquire with my Slovokian friend how she says goodbye.
bye my dear friend i miss u
I don't really understand you question but just simply tell them how you feel, keep it simple and say goodbye.
she could be uncomfortable with affection.
'Adios amigos' is Spanish for 'Goodbye my friends' or 'goodbye friends.'