What to do without sex for a while

Hi, I'm a 19 year old girl in college. Towards the end of the school year, I began having sex with my boyfriend. Now, we will be apart for 3 more months before getting back to school. I was just wondering if anyone has any tips about what to do without being able to have sex for a while. I masturbate but never really seem to get anything out of it. I find myself watching TV shows and getting upset with the characters in relationships. If someone could help that'd be great!