I miss my ex!! :////////////////?

ok me and my bf broke up a month ago..we were together for 8 months..we just grew apart and realized we weren't right for each other...we won't be talking for the next two months cuz he's out of state and he's going to another country for the summer...its only the fourth day and i miss talking to him alot...we're still frnds but i wanna talk to him so bad but i know i can't...i miss my ex :'(...wht should i do?