I want out everytime I say yes to a relationship. Is it normal?

This is very normal. Whether someone is a man or woman, flirting can be fun to do because you are secure with the fact that you have some independence. Many things in our society tell us that being with someone is healthier and the "right" thing to do. Meanwhile 46% of all heterosexual marriages are ending within the first 5 years. It's only recently that more people are starting to realize that they don't need a significant other in their life to be happy. So with this new found sense of independence in the past few decades, it's very common for people to want "out" when someone gets closer. I'm currently seeing someone, but I'm in no rush to become a boyfriend. I like that I get to have the bed all to myself at night. I can go where I want, when I want, without having to explain myself to anyone. I can explore many different people emotionally and sexually if I choose, because just like food- we don't always want the same thing for dinner. We like variety. And right now, the guy I'm seeing is on the same page with me. We don't need to be in each other's lives every day. We see each other maybe once a month, and that works for us. Every time we re-unite, it feels like we fall in love all over again. It's a wonderful feeling. But commitments aren't easy to make when they are to other people. We can often feel very vulnerable, and we also judge ourselves harsher than others. It's a sense of insecurity to commit to people, yes, but many many people feel this way nowadays. It's nothing to be ashamed of and perfectly normal.