It depends, i might not have anything in common with it, in which case there's no incentive to be friends.

On the flip side, it might be an AI specifically built to be interested in everything I'm interested in, to be just human enough to be interesting to me, and have goals that I can offer reasonable assistance in so as not to feel like I'm wasting it's time as true friendship is about reciprocation. That would be an AI I can really be emotionally invested with.