Breakups are the worst thing ever. Luckily, I've never had to experience death in my family, but I'd imagine the feeling is close to a breakup. The closeness and the connection you had with someone is now over. The kicker is that the person is still around and you never really know if it's completely over.
To start to get over your breakup, here are some methods I've used. Nobody can exactly relate to how you feel, although these have helped in the past.