Short conversation😩

Me and my boyfriend just started dating.. when we were close friends we had the weirdest conversations and they weren’t long but they were always followed by another topic. Now that we are dating it’s like he doesn’t care so much about me cause they are short replies and it’s hard for him to express his feelings ig cause when I expressed mine all he said was 😊😊😊😊. This morning I texted him saying morning babe 💕and all he said was gm. Any advice?