Should I....

I gave a baby boy up for adoption when I was 15. 16 years later the mother finds me on Facebook and asks if he can meet me.... I used to get pictures but it was too hard so I stopped it. Idk if I should or if it's a good idea. I am NOT his mother and I don't wanna be a mother. What if I fuck up shit with his REAL mom. She is the real one. She raised him... I'm really scared...