I Hate Break-Ups

I absolutely hate break-ups. Never-mind the fact that if you're in a serious and committed relationship that the emotional turmoil and stress that you go through tears you apart from the inside and out, but it feels like a heavy weight is brought down on you from nowhere and weighs you down -- at least for the first few days, if not weeks or months, after the breakup.

My boyfriend and I of a year and a half, having lived together for two-thirds of that time, broke up over a stupid fight two nights ago. I was deeply in love with him, but there was so many problems and stress in our relationship that I saw it coming a mile away. Without going into too much detail and not putting my entire love life online, I will say that I am responsible for at least 50% of the breakup. I don't know when to leave people alone when they're upset, I don't know when to push the increasingly high insecurities into the closet and not mess with them, I don't know how to provide privacy to my significant other (meaning leave alone personal devices such as cell phones or social networking accounts), and I, for lack of many better words, lack common sense when it comes to certain things, events, or topics.

So I recognize my flaws and where I caused the breakup. For the sake and respect of my (now ex-) boyfriend's privacy, I won't state what his were or what he did to cause it. But I recognize what I did.

Here's the problem though: I'm already going through the emotional stress and turmoil of the breakup. I haven't slept well, I haven't eaten well, and because I usually deal with stress by eating (or not eating), I'm feeling my appetite and emotions do the "roller coaster drops" throughout the past couple of days. I don't know how to cope with it very well, considering this is the first serious relationship I've ever been in. I'm not sure what to do to get myself out of this funk or to keep myself on track with my diet or exercise routine. My depression has come back on so quickly and violently, I'm ready to go back to bed and sleep the entire day away. But I'm not. Instead I'm here at my computer, applying for full time work that I desperately want and need, and venting myself out on the Message Boards of MFP.

I believe everyone has gone through a breakup at least once in their life. If not a heartbreak. How do you cope with it? How do people keep themselves on track with their diets and exercise, especially during the first few days of "aftershock" from a breakup? I don't know if my relationship will work itself out. At this point, I'm not thinking so, but I don't know. I'm trying to keep my mind focused on myself, my diet, and trying to motivate myself, but I'm still in that "low mood" from everything that has occurred in just the last two days.