Megan,
I can understand and empathize with the feeling of fear in a relationship. Consider that trust is built over time, and to me it sounds like you are approaching this new connection skillfully. Said differently, there’s nothing wrong with being a little reserved when a relationship is new. Have you communicated your fears to your boyfriend? Pulling back, hiding your fears, trying to be “more connected” than you really are is the kind of stuff that causes distance. Being afraid is normal, usual, and lessens with time and continued heartfelt sharing between you two.
With warmth,
Matt