Three days ago just had my best friend of the last year confess that she loved me and that those feelings that she'd kept since I'd friendzone'd her for a year had kept growing and had kept her from getting in a new relationship with a manipulative, evil, PUA (which unfortunately I introduced to her because he seemed like a decent friend when I knew him, but then he fell for her and started gaming) that she had just started dating against my disapproval (cause I saw right through his shit and called him on it, which caused him to confess to her and double down). So I decided to go for it and let her know that I liked her too as more than a friend. I'm not sure if this was because I really liked her romantically or if I just really cared for her an incredible amount cause she's my best friend. It's hard to differentiate, I've always cared about her a ton and she's cared about me a ton. She decided to break off with the dude that was manipulating the shit out of her (for one thing, he broke her up with her bf and then swooped in while she was depressed and lonely the week after [this was like 2-3 weeks ago, so they've been dating that long]) and we decided we'd take it slow and always keep our friendship the highest priority. I'd never been in a relationship with a "best friend" but that's kind of my ideal & hers, so was pretty optimistic about maybe being in a great relationship that might last more than 3 months. We get along amazing and have for the last year. We'd hang out all the time and we're both totally hang loose and everything's great just doing it together.
The next day the PUA dude did not take it well and went aggro telling her to choose between me & him, that he didn't trust her around me and didn't want her in his life if she was going to still see me, and that valueing friendships over relationships would get her nowhere in life. He also was caught on twisting stuff I'd say and others and manipulating her red-handed and she saw it. This pissed her off at him even more and she was pretty much done with him.
Then she saw him again last night, he did his magic, and she slept over again and then she texted me today saying she wants to try to make it work with him because honestly she really likes him a lot and that she was confusing her feelings of deep friendship with romantic feelings towards me and she's sorry, the end.
So now she's with the dude who is a douche, and I lost my best friend that I was close with for all the time for the last year, and I got sort of in a possible great relationship and then dumped all within the span of two days.
This is probably the worst I've ever felt from any relationship. If I ever felt suicidal, now would be the time to feel that way.