My thinking is, don't hold a person's past against them. And don't hang on to past hurts.
Do let the past inform your present choices.
To put it differently, the choice to be friends with him or not, or what kind of friendship, should be based on what you can expect. Do you have a level of trust appropriate to the relationship?
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not aspie, not NT, somewhere in between
Aspie Quiz: 110 Aspie, 103 Neurotypical.
Used to be more autistic than I am now.