This guy I met on monday

Hi!

I know, I've been absent for quite some time now. I was so calm the past half year. When my grandfather died something clicked inside my head. I became peaceful, crazy as that may sound. I was at peace with myself and my past and I even started to love myself.

And then Monday happened! I was just walking to my class on martial arts (which I recently started taking to boost my self esteem) and then this guy approached me and asked for my number. He was awkward and funny and even kind of cute, so I texted him back. And now he wants to invite me to a cup of coffee. I know, it's nothing special. But this whole boyfriend girlfriend thing freaks me out. I'm so scared of becoming vulnerable towards a person. I don't want to push him away just in case. He seems to be nice. But I'm so scared of getting close to him. Any advice on this?