Feeling alone all the time....

my boyfriend stays up way later than me. Never wants to be in the bed. I constantly wake up thinking he’ll be next to me. But he hardly ever is. He’s usually either up smoking weed, playing Madden or on his phone. I don’t know what his problem is and why he never wants to just wine down at night with me like a normal couple does. It really bothers me on top of him always wanting to do things alone during the day. We really don’t spend much time at all together & I’m at home a lot & so is he if he isn’t working. What do I do? When I talk to him about it he says I’m being childish & need to worry about myself & he is grown & going to do whatever he wants to do. I just want to feel loved and in a relationship. Not single all the time.