<human>: Can you provide a brief rundown of the text in within 3 sentences?

So half a year ago I finally decided to get therapy for my depression, and a month ago I decided to take the step to try medication as well. 

Now, I have 2 (best) friends, a man and a woman, let's call them Richard and Katy. I have a very different relationships with both of them, and they are very good friends with each other as well. Now, with Richard I have a more serious, intellectual relationship; he has been depressed in the past and understands what I'm going through, and I've told him about the medication.

With Katy I have an emotional, fun and uncomplicated relationship, which is what I really need as I have the tendency to make things pretty heavy. She knows I go to therapy, but I don't really talk to her about my mental health problems, because she can't really relate to them. The worst she's felt in her 37 years on this planet is when she was in mourning for a 3 months because her mom who she loved very very much died, while I have been depressed on and off for 6 years of the 20 I am here.

So I haven't told her that I started taking medication yet. I just think she can't really relate to the fact that I'm so stuck that I really need it. She's also been quite of a hippy before I met her so she still has a bias against psychoactive medication because Big Pharma. I've mostly showed her that is not accurate but it's still there.

I really don't know if I should tell her. I don't want to because of aforementioned reasons, but she's my best friend.

What do I have to gain by telling her? And what do I have to gain by not telling her?
<bot>: Don't know if I should tell my fun, happy best friend that I'm so stuck in my depression that I've started taking medication, because I'm afraid she won't understand and criticize my decision.