lonly once again

only once again man i need so help man. my boyfriend just told me that he is going to a jail because he was doing bad thins so i started crying man im so heat-broking man what can i do to chang thing should i leave him alone i just dont know. and he going to be gone for 4-to-6 month so he made me promes than i would not cry,or cheet on him, or leave him while hes in jail. i just need so type of help i have just been going through some stuff and i dont know what to do i love him and i cry every night thinking about him and what hes doing and is he ok. some body help me please, BECAUSE IM LONLY ONCE AGAIN :( ...................