Okay... I need help

Okay, I need some advice. Me and my best guy friend (SAG)- who is a Sagittarius, decided to take our friendship to the next level two years ago and start dating. I have gotten to that point twice where I wanted us to be official and brought it up, but each time he changed the conversation and never answered the question. I have asked him even directly does he like me or have any feelings for me. He'll say "I Do But I Don't" and then run to our mutual friends and say he does have feelings for me- which only confused me more. Well two months ago after he made a promise to me and didn't keep it and ended standing me up- I finally gave up and told him I just wanted to be friends because in my own opinion he was basically getting the benefits of a relationship (not sex though), but refusing to call it that. Well I moved on and I've started talking to a new guy- GREAT GUY(Taurus- which is a handful in itself), and my best guy friend(SAG) doesn't like that and is trying to do everything possible to get me back at this point. He's tried to plan outings that some how turn into a date, and all it does is make me upset because I feel like he is playing with my emotions and sending me mixed signals. Let it be known I Do Not Want Him Anymore but I do want to maintain a friendship. Which seems like it's impossible at this point because us hanging out turns into a date every time- even though I'm trying to set up boundaries. So my question would be do you guys think that this friendship is worth saving or should I just get some space from this guy and let him go and just loose my best friend?

Little background information on both me and my guy best friend:

- we're both virgins

- we NEVER slept together before or our friendship