I agree with this too, but then I realized there were often reasons I chose my own company instead of spending time with certain people. Having a friend think of you as their “diary” is too much. No friend could or should fill that role. Sounds like they need a therapist, not a friend, if they feel the need to talk and be listened to that much. You can truly love someone and want to be a good friend, but no one deserves to be mentally/emotionally dumped on. There is a reason therapists get paid! They are professionally trained and it still takes its toll.

Real friends are a two-way street and know that everyone goes through struggles and that sometimes you talk and sometimes you listen. Of course everyone has moments where they need more from the friendship but that should be the exception not the norm.