Can I get my ex back?

So me & my ex boyfriend were together for 2 years but in those 2 years there was a lot of ups and downs I recently broke up with him because I was going through a difficult time & didn’t want to bring him down with me.
It’s been 3 weeks & ever since I’ve been depressed & miss him like crazy we don’t communicate but I want to fix things.
Any suggestions?
Can I get my ex back?
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