boyfriend severely depressed and i don’t know how to help him

i (23f) have been with my boyfriend (23m) for 7 years now, since we were in high school. we have our own apartment and a cat, and i thought everything was going great until he started acting weird. like, not kissing me or hugging me as much and not getting out of bed until the afternoon, etc. eventually i pressured him to tell me what was going on and he told me he was depressed, so i took him to the doctor and after a while he got put on meds. this is all maybe a few months ago. but he isn’t getting any better, and i’m worried he’s going to do something to himself while i’m at work or seeing my friends or something like that. he won’t talk to me about it, and sometimes it’s really hard not to get mad at him for that. it’s hard not to feel neglected too, since he doesn’t want to take me on dates or even hang out with me if it doesn’t involve sitting on the couch eating junk food and playing video games. i feel like he doesn’t trust me in a way. i’ve never really experienced something like this myself, so i was hoping someone could give me some advice on how to help make his life even a little easier. i love him a lot, and the thought of losing him kills me. thanks for reading, any advice at all would be appreciated <3