Is it normal that i usually feel like i'm bothering the people i do like?

I feel like im bothering someone when I message or text someone I like as in a friends way. I almost only feel this way with the friends I really like but not with the others that aren't as important to me. I'm not trying to be mean, its just I find it weird how I instantly feel bothersome with certain people who rarely initiate convo & who mean a lot to me. There's others that I'm constantly talking to and asking for help with certain things and it doesn't even cross my mind that I could be annoying. is it normal I feel like this only with the ones I feel very close to/value over others ?