Goodbye sex?

My SO have broken up, and it has been a few weeks. We are in the process of getting rid of furniture and packing, (etc seperation) She might be in a relationship already, I'm not sure. She had sex with some guy, but she won't say anything about a relationship with him. I feel like I won't be in one for a while. At least not in the near future. Her complaint about our relationship was that there was no romance and that it got boring. She said she lost feelings for me about a year and a half ago out of 4 years of dating, but we just kept trying to make it work, which means we had sex without love, which I feel like would be the same thing as after it's official. So now, that everything is done, and that I've dealt with my heart break, would it be crazy to ask for goodbye sex?