tonight my partner caught me off guard and told me they feel unsure about our relationship

we've been together for a year and have lived together for almost a year

we won't be able to talk until saturday

the thing is (as you may relate to), this possible break up is abandonment to me

and i feel like i am dying. i start school in a few days. 

i need advice on how to keep myself from falling into depression

not doing my school work, not staying active, eating terribly or not eating at all

i don't want to feel like dying because of this

i don't want my mental state to be dependent on this person

i know i need to be reasonable and accept whatever they decide

i don't know how to tell my brain i am not dying

please comment any advice you may have about keeping yourself from spiraling from possible abandonment