I need your honest opinion!

I have been in the same relationship for almost a year and a half. I love this kid so much and he does so much for me. I used to think we had a spark that would never die, but I think that spark is starting to go away. We never go out anymore and don't really get to see each other a lot due to our schedules. Though I know he loves me he doesn't want to show me off anymore and he rarely compliments me. He is the first and only legit boyfriend I have ever had. I'm starting to feel like I'm missing out on things like going on dates with different types of people and getting to hang out with my friends and do things people usually do in high school I feel like I'm missing out on opportunities to grow. I love him but it just hasn't been the same lately and idk if I'm happy. Should I leave or should I stay?