Alright guys, first time post here but I thought I will share this story and give myself a bit of space to rant. First of all, I'm not a native english speaker so please bear with me if there is anything hard to understand.
When I was in my last year of college (4 years ago) I was meeting this hot chick but I did have another girl at that time so there wasn't much going on apart from being buddies. But we got along really well and often joked about how cool it would be when we'd be together.
After I finished college, I didn't hold any contact with her for 3 years even though she texted me 1-2 times, but I never replied. Mid this year though, when my last relationship broke apart I was scrolling through my messages and saw hers. I thought "Hm okay I will message her". She did reply, like immediately, although I was never answering. After a bit of a chat and some moaning about our failed relationships during the 3 years we decided we should see each other.
She visited me, I fucked her, she told me the day after "She wants to keep it casual", I said "Thats fine". I did not text for 3 days she then send me a text "I'm constantly thinking about you." - we got together.
As I mentioned before we got along really well, she said she is so utterly happy with me and made pretty solid future plans (after a couple of weeks). She was very open with me and told me a lot of her problems and that she's had a hard time etc.
Now comes the part of the story where it gets funny. After 2 months of being together I had some huge issue to deal with, but I tried to be content. This issue took away all my headspace so she eventually noticed something was wrong. She constantly kept asking me "if anything is wrong?", but I assured her "Its all good".
I was thinking "This girl has a lot of issues too, so maybe she would understand when I tell her I'm a bit down as for x reason". Also I was at a point where I couldn't hide stuff anymore, so I just did tell her about my problems.
From that point things were going downhill. She cancelled any plans for the weekend after, and another week passed before she told me "She's not sure if she's happy with us".
There it is guys, I once admitted that life is hurting me and it made me lose all respect in her eyes. All attraction gone from this point onwards. Fuck, I can't believe my own eyes what happened to me. All words in this sub became apparent.
I did not really try to convince her about how well we fit together, I just said "Fine", deleted her everywhere, opened my laptop and type this. The good thing: I'm learning, but please for fucks sake never even think a second about that your girl is "There for you" and will "Understand your problems".
Edit: Wow, this post got a bunch of attention. I just want to add a few things to shed a bit more light.
1) The issue I have is probably not the biggest deal on earth but I can let you know it involved a small surgery (nothing life threatening though)
2) I did not tell my problem only once to her but repeated 2-3 times that I am stuck on thinking about it and that I had some anxiety because of that.
Thanks for all your replies and your sympathy whether good or bad.