1. They claim they “tell it as it is”, but mostly they just belittle you.
Sure, your friend might pride themselves in being “straightforward” or “honest”, but why does that only seem to happen when they’re picking at you? They claim they want to help you by pointing out your flaws, but once it becomes a consistent thing they do, it becomes less about helping and more about hurting.
2. They get jealous when you spend time with other people.
Sometimes friends get jealous of friends — that’s just how it is. But if they act like you aren’t allowed to have other close friends or get upset when you decide to hang out with someone else, that’s a red flag that they feel some kind of ownership over you.