How can I not be depressed anymore?

Okay, I am really depressed right now. and it is because of a guy. I’m not going to kill myself or anything. but im really sad like all the time. I have been putting on a show for my friends and family but still. Its hard ya know? well maybe you dont but if you guys have any advice for me please help me I get depressed real easy. And there are a lot of things that cause it. RIght now it is because my boyfriend broke up with me. But its like the night before he told me that he loved me and that I was beautiful and all of these really sweet things and I really thought that things were going good, but then the next morning he texted me and it said we need to talk and I was like okay what is it. And this was through a text it said that he could have a girl friend and like last year we went out almost a full year and then he asked me out again this year and I said yes because I still really liked him and so yeah and I was just crushed. But then I have family problems too. My dad is Bi-polar. that means that he has a chemical inbalence in his brain and it makes him have horriable mood swings. I know that ever teenager is suppose to feel like no one likes them and that there family hates them and all of this but for me. Its all real. and like. I dont know. im just really depressed. so if you guys have any advice for me. Please tell me. :( any thing will help.