Mate is worn down with all my drama and is ignoring me

About a year ago, I was going through a rough time in my relationship — it was on again/off again for quite a while.

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I was having problems with my family, too, so talked to a good friend about it a lot. She was very patient and always offered good advice.

However, now she won't reply to my messages and calls, and I'm confused. I worry I may have worn her down with all my drama and maybe she’s reluctant to get in touch in case it's more of the same.