Liking or loving easily makes a person vulnerable so it feels like a weakness - but the ability (or just tendency) to do vulnerable things is actually a kind of special strength.
I had a dear friend who said similar to what your posted - how she liked anyone who showed her attention.
She said it was a weakness.
But I always saw it as a strength. I always wished - I still do - that I could learn to be more like her, in that aspect.
I'm too afraid of being hurt, so I hide or suppress my feelings by instinct.
My friend couldn't do that, but through that she blessed everyone around her.
She always worried how it made her look - her close friends could tell how quickly she would grow affection for someone. She thought we looked down on her for it. But we admired her for it.
Sorry I'm talking in the past tense because she got really sick, and we all still miss her terribly.
But ways that she impacted my friend group live on.
I like to think we all make new friends a little easier and show affection to those new friends a little more quickly, because of her love for us.