Should I Leave him?

So me and my boyfriend have been together almost a month now (18th) and I just wonder if I should leave him. He's really cute and really nice but we never really talk and he never really says anything romantic. Like he says stuff every now and then (romantically) but we don't talk on a day-to-day basis because if I try to talk to him he won't respond until the next day but it really depends the day. He has called me multiple times but we've never facetimed.  I feel like he's just treating me like a friend that he never talks to. I tell him goodnight and he's only said it back once or twice out of the 100 times I've said it. We live in different states so that could affect this. Please tell me what to do or what to tell him because I really don't want to leave him. I thank you in advance for your time❤️ by the way we talk on Snapchat but we've barely talked on messages  {update: so it's been 3 days now and we haven't talked any but I know he's been online because he's. even posting about stuff and I'm really heartbroken at this point. I don't know what to do😓}{update 2: now at this point he's texting my best friend but he isn't texting me; I think he's ignoring me}