Me [21M] with my bestfriend [21F], Think I am starting to fall in love with her

Ok so, me and this girl have been friends for years in a special way.

We cuddle when we watch movies, we sleep in the same bed etc. We really get along and there has never been any more than that. We have the same passion which is backpacking and well we could really be a couple but were just friends.

People sometimes think were a couple because we are acting like one even when she had a boyfriend.

So now shes been single for a couple weeks and we just had a weekend together at my familys cottage. We did everything a couple normally do except that kissing and having sex thing. Its confusing because weve been doing that for a lot of time but now I am starting to look at her differently. I am not sure what to do because I dont want to ruin our friendship, and while we are really good friends I am not even sure if we would do a good lasting couple.

Ive been single for a long time and maybe thats causing me to just want a women in my life? I mean I am ready for this but I know I cant SEARCH for one to be with me..

Whats your opinion on this? Should I go for it and show extra signs of my feelings when we're together ? Should I just tell her about it ?

TL;DR I think I am starting to fall in love with my bestfriend and I dont know what to do about it

*We've been friends for 6 years