We are often very picky when it comes to choosing our potential partners. We go on multiple dates, wait to open up, and often ask other people for advice on whether the relationship is healthy. For whatever reason, we do not go to this extent for friendships as well. A lot of the time friendships come out of straight convenience, and it might be because I'm a bit of an over-sharer but I definitely do not wait to make sure I can fully trust them before I get into some deep topics with friends.
Just like in romantic relationships, there are definitely red flags in friendships that you don't always see. Luckily, people are pointing them out on Reddit.