To be attached to someone like this?

So I have a friend for 5 years now, we talk approximately three times a week, she usually send me a mesage first then I reply and we talk for hours, When we stay 5 days without talking I start missing she, an she misses me too bc she is almost always the one who calls me. And we both live togheter with our parents (since we are young, but not that young thought, this is also part of our country's culture), we usually just talk, draw or do random internet stuff.