I think I have a similar use of the word as this, though possibly less stringent definition. At the moment this definition applies to 3 people unconditionally. Followed in a more obligatory sense by the remaining members of me bio family. (I am still playing a politics game there. Call me a wuss)
Where the problem comes in is in my 'tier 2' relationships. I do truly love these people I would do a lot for them. Though probably not take a bullet for them. (and really when applied to this and the first 3 I mean literally) So I want to express deep intimate feeling but not in the same way as Love with a capital L. I feel a serious lack in vocab here. Especially since I am now involved in a poly relationship. I haven't found something adequate to use with her and it is very frustrating. Especially since we are now past infatuation and moving somewhere else, slowly.