I texted my ex after 3 days of no contact and I'm so embarrassed?

I texted my ex tonight to congratulate him on something and that I was happy for him and he replied with "thanks!" I'm honestly so embarrassed, I didn't make the message seen to save myself more embaressmemt, how do I move on? This is just getting pathetic for me!

I texted my ex after 3 days of no contact and I'm so embarrassed?
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