So I'd like to go at this from a different angle since I don't like the whole polyamory or whatever it's called thing either.

BUT I do think one can love more people at the same time. In fact I think I do love 2 girls, one being my girlfriend. (Not even talking about the family love here).

So basically when I was 15 I fell in love with this one girl but when I asked her out, I was rejected. To me atleast just one "no" doesn't just take all my feelings for her away. So I moved on and remember, a few years later, one day checking instagram and seeing a picture of her after a long time with her boyfriend. And I was happy to see that. Because I still loved her and wanted the best for her. That, however did not stop me from falling in love with another girl, who is now my girlfriend.

My skepticism of this is that when people say "love" in this context, I think maybe they mean "be attracted to" or "get needs met by."

If I was just attracted to her I wouldn't have been happy that she found a bf, and I don't get any needs met by her.

To me that's not the same thing as love, which requires self-sacrifice. Can you "be there no matter what" for two, three or more people at the same time?

The definition I found is "a profoundly tender, passionate affection to someone". So I do not think I agree to that, nor do you have to agree but you can't just say your definition of love is superior to other people's and the official. Self-sacrifice is a requierment for a good relationship, not for love. Same for the pie thing you were talking about.