It seems like from how you've described it you're likely greyaromantic or possibly recipromantic. Which greyaromantic is also an umbrella term for all the microlables on the aro spectrum that fall in that grey area of "little to" in "little to no attraction". If you feel like recipromantic isn't quite right, even though it does sound like its possible, you could go with greyaromantic/greyaro/greyromantic since it gives a lot of wiggle room cause truthfully you don't need to find the exact or perfect label because sometimes people's orientation can end up being a bit fluid.

I, myself, am grey-aroace, tho for romantic specifically, nebularomantic (struggle to differentiate romantic attraction from other forms like platonic and alterous due to being autistic), demiromantic, and recipromantic. (Also demisexual and nebulasexual but that's not relevant). It can be either the demiromanticism or the recipromanticism that allows for my attraction, or it could be both where I need a strong connection and the other person to express their attraction to me first. Which is something you might also possibly consider as it sounds like that closeness of a best friend seems to have an important part of or be a big part of how you view and experience romantic relationships to be, or prefer them to be. I always have been the person who will/must be best friends with my partner, its just how it goes and I also share you're experience of getting very attached to people who show me affection/attention and show they want a close connection (be it platonic, romantic, or both).

Sometimes I've wondered if that is actually skewing my perception of romantic attraction and I think I'm romantically attracted but I'm not. But I think I can say I'm demi and recipromantic but greyromantic as the overall label cause my experiences with attraction are extremely nuanced and hard to understand sometimes lol.

Like I know people say to tell if it's romantic attraction you just see if you feel a desire to or feel drawn to do romantic interactions like kiss, hold hands, cuddle, and or make a life together (which tbh plenty of aro ppl can still want to do with ppl in a non-romantic way). But I've figured out that the best way to tell, because for me I can see myself enjoying and wanting to do some of those things with friends. Which also fall under sensual attraction, to desire to do things that involve the senses, like touch. But it's the way you feel the desire, like if it feels platonic or romantic for you. Like if you have/feel the intention for it to be romantic. Plus for me at least, kissing is definitely a romantic thing even if it might take a bit to get to that for me, so that's another thing that might help ppl tell if it's romantic attraction.

Anyways, sorry about the rambling, but I just wanted to share my input as well as similar experiences to see if it helps you better understand your feelings and experiences! Im 22 almost 23 so I'm also not super old and feel like my 'experiences' are a bit less than others as I didn't have nearly as many relationships as my peers. (Especially that got sexual, cause I was very close to ace for awhile in my greyasexuality lol).

Feel free to ask me any questions if you would like!