If you are now just friends and she is dating other guys, nothing will change until something about you changes. whatever that something is that is keeping you in the friendzone.
I read somewhere that sleeping with a gal and nothing sexual happening is just reinforcing the friendzone status. But LS will have someone post an exception to every rule. So, if I say you are in the friendzone and there you shall stay, someone will post about being friends for years and then becoming lovers.
It`s a no win situation....

That is trying to tell you what to do. But I speculate, something about you must change. You cannot change another person. So if you are waiting for her to change her mind about you. it could be a lifetime of pain.
If you are well endowed maybe do a porno movie. Then she could see what she is missing

Just joking here before the moral police chastizes me

Usually nothing works better, if there is any hope at all, than becoming interested and having a good time with another woman.
If that don`t do it, maybe it just was not there ever.