Any idea why...

Annie
My boyfriend and I have been dating for a year and a half now, we have a dog together and have been living together for the past seven months. 
Now that our lease is up he had moved back in with his parents and I have moved out on my own (which I am completely unhappy about and think is total bullshit). 
It seems almost silly to ask this but why is it that I feel like I'm constantly fighting for his attention? I definitely do not want to sound conceited or selfish but I feel like there are PLENTY of men that wish they could be with me, so why doesn't my boyfriend ever treat me like I'm someone special or like he never wants to lose me? Does he not realize what he has or is this just a man being completely oblivious?!