is it normal to want reassurance?

Every so often I ask my (flame? Guy I'm talking to? Haven't really defined it) how he feels. He doesn't usually say it. And I know he's not talking to anyone else... but I just feel like his feelings could change. And it makes me feel better if he says otherwise. But I asked tonight and he was like "you keep asking the same thing" which I do. I guess I'm just feeling insecure. Should I just stop all together?