Trying to end things on a positive note when you know your not getting what you want?

i already know that i'm not going to be getting what i want out of this situation but i'd still like to end things on a positive note with this other person. they've been here for the summer for work and will end that in another week or so. which is why i'd like to end things on a positive note with them

although not exactly sure what to say , i'd like to stay in touch but don't even have there # or email and not sure they'd give me anything or not. obviously not the outcome i'd hoped for but would feel better if things ended well

Trying to end things on a positive note when you know your not getting what you want?
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