Need advice please!!!

So me and this guy has been talking for almost a month and I really like him a lot and he said he likes me and he said that he wanted to keep talking and see how it goes and everything before me and him get together! But I feel like he's talking to other girls and he promised he wouldn't hurt me and he wouldn't talk to other girls while we was talking but he's been kind of ignoring me and I feel like he doesn't wanna talk but he says he wants me and everything else and I don't know what to do!! Someone please help!!