<human>: My partner (M23) works nights, I (F21) work 8 to 5 so I come home every afternoon and he is asleep and doesn't wake up until 11.30 when I've gone to sleep. Weve been together for 2 years, when we were first dating it was fine, I was actually sort of happy about it as it ment that I could have a life of my own (I've had a relationship that was quite codependent and don't want to be in a similar situation again). But after a few months of us living together I'm seeing myself become quite depressed, I've started drinking most nights which can be a problem for me as in my teenage years I abused drugs. I've been trying to keep everything under control but it's getting harder, especially when I'm alone all the time. My partner is trying to change his sleeping pattern so that he can sleep while I'm at work and we can spend some time together in the afternoon but I don't want him to do this if it risks his health. 
I have no idea what to do in this situation but if anyone has any advice it would be much appreciated.

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<bot>: I'm going through depression and starting to drink a lot because I'm spending every night alone as my partner works nights.