Watercress, my archnemesis?

When I was a little girl in Puerto Rico, I remember my aunt eating a salad and it had Watercress(Berro)in spanish. The salad looked preety good but I did'nt get to taste it, my aunt loved it though. I went to the local spanish market last week and bought a bunch, I usually try before I buy if it's a food I have never tasted before, not this time, bad idea. I took it home and then took a few leaves rinsed them and ate some, nice soft then texture leaves, then it hit me, they are bitter and I do not like bitter foods.
I researched on recipes and came accross potato and watercress soup. I was going to make it but was so put off by the taste of it decided not to make the soup. The watercress still in my fridge I don't know what to do with it lol!!Im hoping to cook the bitterness out of it.
I'll post a photo if I make something with it, hopefully it will be tasty and the bitter taste isn't so bitter. Im very bitter about this.....