need relationship advice!

so my bf and i have been together for about 5.5 years and now i feel like we are at a stand still in our relationship. i keep waiting for him to propose and he still hasn't nor do i think he will any time soon. we fight a lot sometimes but i do love him a lot. i'm talking about loving someone so much it hurts. we live together but mostly every day he hangs out with his brothers and cousin and of course i am invited too but sometimes i just get tired of it. i don't feel like a priority to him. sometimes i feel like "i'm just there" like background music. and that his life wouldn't be so different if i weren't in it anymore. he never wants to take me on dates and it does hurt my feelings. i want him to WANT me. to need me like i need him. even if we do plan something , he ALWAYS invites his brothers and cousins. or he puts off whatever we were going to do if they plan something else. it really hurts me because i am in school and plus he works out of state for weeks or months at a time. so i would like to spend time just me and him every once in a while when he's home. 😕