Should I go for a guy who had a ONS with by best friend once?

Anonymous

So, I moved to a different country two years ago, and my two best friends were visiting me for the first time. It's a very wild, touristy city so they wanted party and meet cute guys. One of them found one on her own, and the other one wanted me to hook her up with someone. Even though I don't know many people here, I met this guy couple of months ago that seemed cool and attractive, he was after sex but I friend zoned him because I was looking for a relationship. Still we kept each other's contact, and I thought he would be great for my friend. So I invited him and he came and we all quickly vibed well and had a great time! They eventually hooked up but no strings attached (as claimed by both). Anyway fast forward, they left and the guy and I kind of continued being friends since we bonded really good during their visit. Months had passed and I realized I've been spending a lot of time with him because I actually enjoy him, and I started developing some new feelings. So I asked him just to hear it from his side and he tells me he feels the same and tried to kiss me but I backed off. We have been like a couple basically just without intimacy, and I also noticed he never talked or asked about her, I think he just doesn't want to tell me that he just wasn't that into her (regardless). He would say great things whenever I would mention her, but he would never on his own. Which is not the same case with her, she does sometimes ask me about him and she texts him and he leaves her on read often... To be honest I have been dying to go further with him for like a week now ever since that almost kiss. And he has been emotionally in my life like fully 100% ever since then. The problem is my friend, who is by the way visiting again in a month thinking we''re just really good friends, and the fact that I feel a bit of jealousy and insecurity being intimate with him, especially since I believe my friend is the hottest woman in the world and she said he rocked her world. Help?

Updates
8 mo
Just to make it clear, I'm not gonna do anything with him before I talk to my friend!
Should I go for a guy who had a ONS with by best friend once?
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