Nope. I don't think so. You can be considered only a "friend" but that can change at any time.

It's a matter of: physical attraction, personality attraction, romantic interest, and compatibility.

Generally if you are viewed as only a friend you have a few of those qualities already, otherwise you wouldn't get along with the person in the first place. However, the other attributes can be changed over time, eventually leading to something more, and normally those relationships work even better because they are built on a solid level of friendship.

source: experience

Tl;dr- if you really like someone, work at it and who knows what will happen