NEED ADVICE please!?

Im in a relationship with the most amazing guy ever, he loves me and i love him too but hes in the army atm and is always coming n going and its startin to affect me. i would NEVER cheat on him or anythin like that but its really hard for me thats his not here. Hes not comin home till august n then after 10 days he has to go back 4 8 weeks. wat should i do?!