Listen to your friends. When he is ready to talk, he will. Some guys just don't like opening up about their problems. All you need to do is let him know you are there for him if he does ever want to talk and leave it at that. If you keep pestering him, you will probably just make it worse.

I'm in exactly the same situation - I've been with my boyfriend for just over 4 months and I love him with all my heart, but sometimes he goes into these strange, depressed moods. He's worse than me when it's my time of the month! And at first I didn't get it. I thought it was me, but I was wrong. Sometimes they just go like that. And I doubt they even know what's wrong either. My advice is just let him deal with it himself, and don't push him to tell you anything he doesn't want to. He knows where you are if he wants someone to talk to or even just a hug and a cuddle, and other than that there isn't much you can do. Just let him sleep it off :) my boyfriend's usually okay by the next morning :) boys will be boys eh? :)

Try to do little things for him. Drop off a sweet note. Or something. But do not get in his way DIRECTLY. Leave him be for a little while.

You're just going to have to get in his face and make him tell you what's wrong, some guys just clam up to test if you really care enough to keep asking.

i disagree with what your friends say. i have the same situation except i am the one getting depressed. ive had depression for years so i have a lot of experience with it, i've seen therapists and they have analyzed me of course, and just dealing with it everyday my family and myself have slowly learned with experience how to deal with the different aspects of it. so i can tell you what its like for me, and obviously it is not the same for everyone, but is worth considering when trying to help your boyfriend. most of the time when people with depression get depressed, they honestly don't know why. they(we) get frustrated when you ask us whats wrong because we just truly don't know how to answer. after years of it myself i can pinpoint things that are triggers, and they are unique to individuals, but still sometimes i really dont know for sure. what i personally need is a number of things. i feel like curling up in a ball in my bed and being alone and wallowing. but it has the opposite effect on me when thats what i do. i think i want to be alone, but then i just feel lonely and it takes me longer to snap out of it. when the people around me let me be alone it makes me more sad because i feel like they don't care enough and they gave up too soon on making me feel better. i suggest you do leave him alone for just enough time to go get somethingyou know will pick up his mood. go get him a big mac if he loves big macs, or make him a card, everybody loves things made for them with thought and love. it shows that even while you were leaving him alone you were thinking about him. or if he likes to play videogames, and you dont very much, offer to play a round with him, because you're doing something you don't really like, for him. dont do anything that makes him feel pressured or make it feel like you're mad at him and getting tired of him being depressed. it will feel like that sometimes, you will get frustrated and say 'whatever, let me know when you want me around again' and sometimes you just have to do that, and we are exposed to the reality that us being sad is making you sad, and mad, and that helps us snap out of it too, because we dont want our loved ones to have to feel the way we do, depression sucks. its very hard to control, until you have it long enough to understand it in yourself, and see it. lots of times my mom or my husband would know i was depressed when i didnt even know. they recognized how i acted. it took a long time to accept. i say this because if this is a new thing with your boyfriend, he may be the same way, and deny hes depressed or anythings wrong, and it doesnt help to argue about it.

ive been with my bf for 2 years.every time i talk to him (phone/msn/start of a text convo etc) i ask him how he is, and he asks me. simply the way we respond, whether its yeah,yep,meh tells the other if we are ok,fine,great,rubbish or if something is really bugging one of us. personally, i find it hard to express whats wrong when i speak,so i usually end up sending a quick text to let him know.
next time u see him and he seems down, wait until the two of u are cuddling (i wouldnt advise more) and ask "you ok?" or "how are you?" or even "what are you thinking about?" and that should get him to talk a bit. dont ask "what's up?" unless he responds to the you ok question with a sad tone/face.
if he is ok and you ask him whats wrong, it could annoy him. i know it does when people ask me whats wrong and im simply thinking about something else or distracted. then i get in a bad mood. but thats just me and what i would do

take care and good luck :)

Maybe he's got bipolar disorder and is too scared to tell you. If you pressure him, he will never tell you. If he wants to tell you, then he eventually will. Also for my boyfriend of 10 months, he doesnt get nearly as badly depressed as your boyfriend but usually distracting him by playing fun games with him like xbox or ps2 usually works for me lol plus i enjoy the game too ^^ and also making out and more ;)

The only reason you want him to open up to you is for your own benefits. You want him to open up to you so you can feel like you mean something special to him, because we all know we only open up to people we trust.

Five and a half months is not a very long time at all. It took me and my boyfriend six months before "love" even came into it. It took me eight months to open up to him.

Just let him know that you're there for him and that you understand, and just leave it. Because by pressuring him into telling you, you're being selfish, even if it feels like you're not. He'll do it when he wants to, when he feels 100% comfortable to.