My best friends are ones I communicate with maybe once or twice a month. We usually just make plans to get together and eat dinner, talk about how our lives are, books, politics, etc., then go our separate ways and barely communicate at all. These are my favorite types of friendships, because we have been friends for so long we can depend on each other, but do not constantly have to be in contact or around each other.
My relationship with my boyfriend is obviously quite different, we see each other on a daily basis, and usually text each other through out the day when we are apart. Occasionally I do get a little tired of him always being around, we practically live in one room together, but for the most part I do not mind. I certainly do not view our relationship as "limiting", perhaps a little irksome sometimes, but I do not feel he is holding me back from being with new people or any such thing.
I generally do not get along with clingy people who need constant communication/face time in order to feel that we are "friends", which is why I am not friends with anyone like that.