another way to look at the difference between eros and agape could be to think of it in terms of selfish-eros as desire, want, passion, taking - and selfless-agape as caring, giving, supporting, no strings attached. I wouldn't equate it with awe, which to my eyes is more related to respect or even fear than love. But I see what caridwen is saying and great admiration in unhealthy doses could lead to that and be mistaken for love, right?
I guess definition also depends on the time of usage etc.
As relating to the star, I can see it as love in the sense of agape or innocent pure love. Perhaps if we see the ideal of the lovers as needing two people or things to be united in love in it's highest expression, then the star could be the pure feeling itself, as experienced or expressed by one person? Just a thought, I'm not even sure if I agree with myself here