The money you have invested is gone, all you have are some numbers on a website.
You're not the first and probably not the last to find a girl on tinder who is an experienced trader and is looking for investors rather than actual dating.

Now, let me tell you how this will go on from now on
Once you will try to get your money out they will ask for another 1-5k, for commissions, for fees, for verifications, for anything, after that, if you fall for it they will claim your investment has grown to 25k euros but they need another 1-5k euro for etc etc etc. And if you're stupid enough t believe they will scam you like this till you end up with 1 trillion in fake numbers on a website and penniless in reality.

Looks familiar?
https://bitcointalk.org/index.php?topic=5288630.0