My ex added me back on snapchat?

Anonymous
My ex deleted me off snapchat a few weeks ago because he thought I was posting quotes about him and got mad. I told him it wasn't about him and he understood but we left it there. Last week he messaged me saying 'hope you had a good valentines' and 3 days ago he added me on snapchat randomly. I wasn't even expecting him to add me again. Why's he doing all this lmao?
My ex added me back on snapchat?
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