I love my boyfriend but I'm not emotionally fulfilled. Should I break up?

I'm 25 years old and have been dating this 28 year old guy for about 3 months and some change. I've known him for longer though... When we first started hanging out I kinda already expected what his mannerisms and quirks were going to be like but as the months go on I am starting to really think about whether or not I want to keep putting energy into our relationship. He's a naturally apathetic dude who has a bit of trouble expressing his emotions (says he's changed now) and when we hang out we don't go anywhere unless I make suggestions. Even if I do make suggestions he'll say he doesn't want to drive. All we do is watch TV in his dark a*s apartment, he smokes a gang of herb, and take naps. I notice how he will go to such great lengths to go kick it with his homies but when it comes to him and I he puts in very minimal effort to keep me happy. I don't know what to do or how to talk to him about it. He says he cares about me but I told him if that's the case then show it (pda, a little consideration or display of affection). I'm not asking for flowers and chocolate but damn show your girl that you care enough for her to stay.