PLEASE HELP! 10 points to who can? (re-posted question)?

I feel extremely platonic towards someone. In case you don't know what that is, it's like i love them but not love love more like siblingly love i guess

I really really care for them, is the point.

The problem is though is that she just told me about how she feels (again platonically) towards her other friend

and i feel really depressed now about it

I feel like she'll always like her other friend better or that that spot will always be filled by that one friend....

she's literally one of my best friends and i seriously cry when she's upset and I'm happy when she's happy and i care about her so much it's ridiculous

but not to romantic extremes because I'm not romantically attracted to my gender...

What I'm asking here is is because she feels that way about her other friend, would it be impossible for her to feel the same way towards others like in a non-platonic relationship?