Guys, an ex situationship invites me to his wedding? what is he really thinking? he was like we are friends first despite the drama that unfolded?

I'm not planning on going

But I'm curious what does a guy think and intent behind inviting a girl he had a crush on/ ex / etc to his wedding.

Guys, an ex situationship invites me to his wedding? what is he really thinking? he was like we are friends first despite the drama that unfolded?
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