I can be myself around him but I’m scared

I know I have a general like but when I’m with him I feel at ease...feels like I can be myself, he understands my weird little quirks I understand his weirdness. He makes me feel so comfortable and I love that normally I’m tense with guys I’ve dated but with him it feels so natural. I’m scared that he doesn’t feel the same way..we comfort each other but I’m so nervous to know! I like him a lot I just fear that he doesn’t really care about me like I do