So i have really liked one of my friends(girl) for the last year and a half, and for that whole amount of time, I've waited for a chance to be with her. And through all my kindness and being there for her, I've gotten soooo freaking deep into the friendzone. I'm getting ready to give up and try to move on.so my questions are, how long would u wait to be with someone you really like? And also comment with any suggestions you have for me. Oh and sorry for any poor grammar, spelling, or punctuation.

When I was a senior in college, I was super jealous of this girl he dated briefly. I also was jealous of his other female friends. (immature, I know)
I thought he would ALWAYS wait for me. When he moved on, I realized I almost missed out on something great, so we started dating.
I wouldn't recommend getting a girlfriend JUST to make her jealous. That would be really mean to the girlfriend. But, do you have any other female friends you enjoy being around? Hang out with them more, and see how she responds.
So would that be your friends daughter or his girlfriend?
You've said that you're already deep in the friendzone. This should tell you straight away, that she's not interested. You should stop giving this chick the time of day, because you deserve better than to just spend your life pining after someone who doesn't give a shit about you. There are so so so many women out there that would NEVER friendzone you and that would do anything to be with you. We accept the love we think we deserve.
My best advice is to simply stop having any contact with her at all. Go completely cold turkey. It'll be soul destroying to still spend time with someone who you secretly are in love with, and it will stop you from moving on fully. The added bonus of this, is that once you start ignoring her completely she MAY start to miss you and try to contact you and things MAY work out, but it's very very unlikely. Right now, you're too 'available' to her.
You need to stop putting the pussy on a pedestal. Why waste your time on a girl that doesn't care about you in the same way? Spend your time on someone else who will love you for who you are. Time is the most precious thing we can give someone, so don't waste it on someone that doesn't want it. Life is so short, so don't spend it waiting for some girl to suddenly start liking you. It's not going to happen. If you like a girl, and after a week she is still not interested, MOVE ON! Don't waste your time on people like that, it's pointless.
Furthermore, don't see this as 'giving up'. You never give up, you just stop pursing her. It doesn't make you less of a man to just say "Fuck this" and go after someone else. What makes you a true man, is being able to accept that, for now, this woman isn't interested and you'll have to try elsewhere. It makes you a true man to get back up after these things and keep your head up.
I know it'll be hard to just move on straight away, but it is honestly the best thing for you. But once you start liking someone else, you will realise that this girl isn't everything.
This can be such a good motivator for you as well. This can be your chance to take hold of your life and make yourself a better man. You can start hitting up the gym, get swole, lose some weight, get some nice new clothes, new haircut, a tan, take up a new hobby, new friends, go out more, whatever. Move and become a better man. Ditch the girl and stop waiting for girls like that. Move on man, move on!
Because that's not how you get most girls. I am an arrogant, narcissistic, quick tempered, unfaithful, occasionally violent, unemployed, liar and I have never had a problem getting chicks. It might sound really bad but the truth is when a person thinks they are on par with god, really believes it like a deluded narc, many others will believe it because that's what will "emanate" from you. How do you think cult leaders get so many to follow and love them? Because they radiate the charm they believe they have. Many people have the perception that you must be nice and that is bull, "nice guys really do finish last". To escape the friend zone never be a friend to begin with, don't show obvious interest, but don't ignore them entirely. Don't be a total asshole, but treat the person as a valuable follower, and they will follow completely unaware of the fact that you are no better than they, maybe even akin to the devil.
"We are what we believe we are at given times."
- Tommy, the king of all cats.
Haha but yeah, it sucks waiting to see if someone likes you or not. Just move on, that's why I'm trying to do. Eventually you'll forget about the person.
Only, the friend was my best friend's girlfriend.
Sooo... that didn't work out.
But I'm happy now. I found the girl that I've always wanted, and I'm so glad that I got over the other girl. (Mostly because I realized how awful of a person she really is.)
Maybe just take that into consideration? Of course, this is just my experience. Don't take it as gospel.