What is my problem?

So, my boyfriend is very busy and right now our relationship sucks a lot because we never get to see eachother. We barely get to talk and it sucks. Most of the time I go to bed sad and he just lets me. Mostly because I tell him I'll be fine. And I know he really needs some sleep so I just let him. But I hate it when he wants to go to sleep I just want more time with him. Even if all the time I get with him is texting or over the phone. I just want him all the time. I cry or get in a sad mood when he wants to go to sleep but I feel bad because I know he needs to sleep. But. Why do I feel like this? Why can't I just accept he needs to sleep? I usually just fricking cry till I fall asleep. 😢 (we have been together for a year)