I (23f) really screwed up and broke up with my boyfriend (28m) on the encouragement of my sister (29f) because she didn't think he had a good enough job for me. Now she is trying to hook him up with her best friend (30f) And I don't know what to do, at all.

So if it isn't obvious from the title, I really really screwed up. Basically I was dating the greatest guy ever and was really in love with him and thought he was the best thing ever happened to me. The problem is, is that he's the manager at an oil change place and that's really all he ever wants to do with his life. I was happy with it, he's very happy with it because he's very good at his job and he also has a group of employees and even customers that love him and he has probably the best performing shop in the state. My sister on the other hand always told me that I am swinging below my ability basically and that I should try to go for another Guy with a better job and more potential.
So I was very stupid and I listen to her and in June I broke up with my boyfriend it was devastating to me and I know it was devastating to him and I have tried several times to get him back but he says I heard him too much and it was a window into my soul that he didn't like looking through even though he loves me with all his heart.
I am pretty much resolved myself that it's going to take me a long, long, long time to get over this and have pretty much excepted that I screwed up and the only time is going to heal it. So here's the part that really sucks my sister, the one who encouraged me to break up with him, is now actively trying to set up her best friend with my ex-boyfriend. She tells me it's just a coincidence and she thinks that they would be great for each other. So the obvious question is if her best friend is good enough for my ex-boyfriend why was and I get enough for him? Well she tells me that it's because she could never let her sister end up with the oil change man but she doesn't have the same issues with her friend. I'm so brokenhearted over this that I can hardly even sleep at night, in fact I can't sleep at night because I feel so betrayed and I feel like such an idiot that I listen to her When it certainly seems she had this grand plan all along.
I'm so brokenhearted it, I am so lost I'm so devastated I don't even know what to do. And now add this B trail in from my sister and I don't even feel like I can face the day most days. How do I handle my sister? How do I handle my ex-boyfriend, I mean is it his life and I should stay out of his business even though I know there was some weird **** going on with my sister and the girl who's trying to date him now?

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tl;dr: I screwed up really huge and broke up with my boyfriend on the encouragement of my sister. Now my sister is trying to hook her best friend up with my ex-boyfriend and I have a run of emotions, none of them good, and don't know what to do.


Source.

Assuming, once again, that any of this is actually true, are people really this stupid to actually have to ask what to do in this situation?
Jesus H. Christ, these people are in their 20s and act like fricking pre-teens with their drama.

What's more important to you, substance in a relationship or material things? If you're in love with him and he made you the happiest, then who cares what his profession might be? Sure, he cant shower you with lavish gifts, but he can give you what most guys can't. True love and happiness in a world where nothing makes sense. Follow your instincts, your heart. Do what you need to do for you, not for someone else