Confused about my long distance relationship

so the guy i have been talking to for a little over a month (we are long distance) has finally talked to me again after 8 days of ghosting me. he only replied because i called him out. before the ghost he was super sweet and flirty, now things seem kind of cold. he says he has a lot going on in life right now and he doesn’t feel like talking about it or anything, but that he’ll explain to me at some point and that he has a right to be reclusive until he wants to come out of his shell. i’m going to give him time, but this whole thing gives me anxiety for i have a lot of feelings for this guy and i feel he does too. granted, i am the first male he’s talked to, so a lot of this could have to do with that. i know i should respect his boundaries and his mental health, but i just wish we could communicate on that level and talk about it together. does anyone else do this? does this sound like something someone depressed would do? i cant decipher if it’s a red flag or if i should hold out for him, because i know he’ll be back to explain. i’m just so confused and it’s making me so anxious and sad :/