boyfriend won't spend time with me

My bf and I have been together for about a year now and have been living together for almost 4 months. I feel so conflicted because I fought so hard for this relationship, and I really do love him so so much, but it's seriously hurting me being this relationship. He never gets off his computer, like seriously all he does is sleep, go on his computer and play games, go to work and then the cycle repeats. now I don't mind him playing video games, I'm actually pretty obsessive when it comes to my games as well, but at least I actually try to communicate with people and plan things. I've tried asking him to go places, to go see a movie or just go window shopping, just to fucking do anything. he even promised me after me begging him to take me to go see the new exhibit at the museum that he would take me there, that was literally 5 months ago, the exhibit I was eager to see for 8 months is gone now. Now I would have gone with friends, or heck just by myself, but because he said he would take me, I didn't go. And this doesn't stop at doing things outside the house, I ask him to watch movies with me, or walk to the shop or doctor with me, all I get is "maybe later". I'm sick of waiting, maybe later has turned into maybe in another 8 months. and to make it worse, I found out that he's been looking into rings to propose. I love him, I really do, but I can't live the rest of my life waiting for someone to finally pay attention to our relationship. does anyone have any tips on how I can try to fix this relationship? cuz I'm seriously out of ideas.