"Normally I wouldn't comment on something like this cause like f**k you," Davidson wrote on his Instagram Story. "But I've been hearing a lot of 'people with BPD can't be in relationships' talk. I just wanna let you know that's not true. Just because someone has a mental illness does not mean they can't be happy and in a relationship. It also doesn't mean that person makes a relationship toxic."
Davidson continued: "I just think it's f**ked up to stigmatize people as crazy and say that they are unable to do stuff that anyone can do. It's not their fault and it's the wrong way for people to look at things. I may be crazy but at least I'm aware of it and not afraid to be honest about it and I'm not hiding behind a Twitter or Instagram account."
Here's more on Davidson and Grande's relationship: