<human>: I've been in a relationship with my girlfriend for the past 3 years and she was always the little light for me when everything else was dark. We're both the same age [25] and we've known each other since age [12]; however we've only been together for 3 years.

We've been together through the good and bad, and we've had agreed that once i finish the university i would marry her, or at least that's what i thought would happen.

Today, she asked me what would it take for me to stop loving her, and i said she would need to kill me to which she answered : or get married!

I thought she was kidding; the thought alone made me laugh so hard but i asked her if she was joking. She wasn't.

It seems like someone talked to her father and had her accept his proposal.
She didn't try to refuse and she didn't put up a fight because "her father" said yes.

I was chocked, surprised, angry, enraged, sad and felt betrayed.

3 years where i thought i knew her, but not in my worst nightmares i thought she could do such a thing.

Even though what happened, i'm feeling sad, helpless and lost all power to do anything. I spent the last 2 days in my bed sleeping, and crying when i was awake.

I thought she was the one, but she didn't feel the same for me.

What can i do to feel less miserable? I feel like my world is falling appart.

Can you condense the text into three sentences or less?
<bot>: My gf is getting married after 3 years of being together, i'm lost and don't know what to do or where to go from here, please help me stand up again