I dunno about that but I certainly get good feelings about people that happen to be true. when I met my current partner I thought "I wanna be your friend. I WILL be your friend!" and when I met our mutual friend I was like "yeah being friends with him would be cool." the difference in attitude is hard to convey thru text but basically I know the difference between someone I wanna be friends with and someone I wanna be best friends/maybe more with, and usually I do become best friends with the people I think that way with. ive only dated one (lol) but when it comes to friendships at least, upon first sight, I know I wanna be friends with them and it usually turns out that way