['I use to be very trusting until 8 years ago.', "Why 8 years? That's a very specific time ago.", '3 people I thought were my friends attacked me out of the blue and left me for dead. I have had a hard time making friends since then.']
That's ridiculous! They were clearly not your friends. There are much better people in the world.
I was at a company picnic with co-workers. I walked away from the picnic to another area of the park with 3 co-workers I felt trusting with and even felt they were friends. The 3 guys ended up attacking me and leaving me for dead. I'm not so trusting now.