Hello!
Sounds to me like you have not really found the right person just yet. Getting back with E because she's slightly better than C but not really loving her either. Do you see what I mean? Putting it bluntly, you've tried them both already, time to move on.
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Pegasus
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“Everybody is a genius. But if you judge a fish by it's ability to climb a tree, it will live it's whole life believing that it is stupid.” - Albert Einstein