What is the kind of persona you projected to your BF? Does he
know your other character? Do you know how he behaves in front of
you and when you are not around?
You 2 are still building a relationship. It is at times and
situations like these that could bond your relationship even better
or break it. Have a talk with him and let him understand your
concerns.
Loving someone is not just a box of chocolates, they will give you
tooth decay. Many times the vegetables has to be put into the menu
to balance things out. Many relationships fail because they only
want the chocolates in it. Unable to balance the diet
(communications, emotions, concerns, etc, etc) has caused many
problems and break ups.
If you cannot understand, ask. If he does not comprehend,
explain.