My boyfriends depressed & drunk

Lately it seems like my boyfriend of 5 years is depressed. I’m saving myself for marriage & he is not a virgin. It’s getting to the point that we are on really bad ends. He wants sex now or he wants us to break up. But he is also depressed and drinks all the time. The last two times I’ve stayed over, I’ve had to take his shoes off and lay him in bed.. I need all the advise I can get.💔