I'm gabby :)

So for all you creative writers put there, I need help. I'm in the process of writing my first big story. But there's one chapter I need help with. The main idea for the chapter is for this guy to cover up to a girl he's been talking to in panic because he feels like he knows her from the past. Sounds simple enough to write, but I can't think of a way for him to bring it up or how he goes about the situation. I'll give more details to anyone who has an idea! Message me if you can think of anything!  
                             Xoxo
                           -gabby

Hi! I hope you’re doing well. I was wondering if you could give a shot at my story called The Courage Of Stars. It’d mean a lot.
          
          You can find it here: https://my.w.tt/upUxqRLbf9
          
          Have a wonderful day!