Let the girl go, spend time with your mom, invite friends over and tell them that they are an important part of your life.
As a sociopathic piece of shit I dont know what to do about your sister.
You'll pull through, we always do.
The one takeaway I got from this is that you need to ditch the girl who doesn't really seem to be worth your time, if she doesn't consider you in a relationship after 5 months she probably never will, and focus on your family. That if something happens to your family, or your dog as pets can be family too, while you were chasing after a girl who won't commit you are going to regret it. The girl may seem important but if she's just going to string you along for that long she's not worth the time you could be focusing on family.
Be lucky you have savings to pull from, a few months ago things were rough like that and I had to use a credit card to pay my bills. As for the girl, find a new one. I guarantee another woman starts showing you attention and she'll stake her claim immediately. At the same time, do you really want a girl that's going to treat you that way?
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