<human>: Can you condense the text into three sentences or less?

It's been a few months since I broke up from a relationship that lasted almost five years. It was my first serious relationship and I truly believed I was going to get married to her. 

Initially I was getting along fine, burying myself in work.

Then it happened. A couple of days ago I opened up a new browser to test a website, and her email account was logged in. 

Obviously I couldn't help myself, so I had to take a look around. Don't tell me I shouldn't have been snooping, it happened, so whatever.

I found a sex tape with her new guy from about 2 weeks after we separated. We were technically on a break during this time, since we decided to take a break for one month to see how it went. I tried desperately to win her back at the end of the break but it was pretty clear that she was over me.

She initiated contact with him a couple of days after we started our break, but it seemed like they were "talking" for much longer. 

The kicker is that I knew she normally talked to him during our relationship. She kept convincing me he was just a friend (even though they dated before me, nothing serious, like a high school kiddy relationship).

She found out I was logged in as she changed her password a couple of hours after.

I used to love this girl very much. I always had an amazing time when we were together. However, although we still talked every single day, I was always a little introverted mixed with adhd so I gave her little attention when we weren't together.

I can't sleep, I can't eat, I can't get any work done. I can't stop thinking about that video. It destroyed me.

I'm going insane, I don't know what to do. Googling tips for getting over an ex gives me the same bullshit generic advice.

I know if not treated properly, adhd can lead to bipolarity. I'm starting to feel some symptoms of manic episodes where at night I feel like I can do anything, and in the morning I feel completely depressed.

[
<bot>: ]: Found my ex's sex tape with another guy from when we were on a break and I'm going insane.