New here, and I need motivation!

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Hello. My name is Shannon, and I'm 18 years old, residing in NJ.
I am about 170llbs right now.
I want to be 140.
BADLYY.
Losing about 15 pounds before summer vacation (June 23rd, I think) would be awesome.
Once I get active, I lose pretty quickly.
I've managed to lose 5 pounds in one week healthily.
Hopefully I can pull something like this off again.
Anyways, I really want a weight loss partner.
Someone I can communicate with (email, text, whatever), to keep up with stufff.