.....outting with the ex

So yesterday, I went out with my ex to Frankie's. I know there's people who say they can't go out with their ex and have fun without having animosity or still be in love with their ex. I thought I was going to have that same issue just being around my ex, but I actually didn't it was quite fun. Funny thing is I was so proud of myself, because I know me I like to hold hands and be close, even if we aren't together. This time around I kept my hands to my side and had a "friend distance" between him and I. The only contact I had with him was when I hugged him and told him I had a great time. I really don't think it's that hard to hang out with an ex. (I mean unless that is you had a horrible break up! lol). By the way Frankie's was fun, even though it was blazing hot!
I want to know do you believe it's hard
to just hang out with any of your exes?