getting nerves

my boyfriend is 18 and im 17 his little brother took his old phone and sae sum pics of us . my boyfriend is real nerves now about getting caught and charge. my mother knows that we been doing stuff but now hes nerves and dont want to do pr send anything anymore. we barley go places but he says maybe we can have sex somewhere else .theres no place else to do it .what should I do to help make him feel better ? how can I get him back to doing the fun stuff we always did?