I like to hang out with a friend cause she has no zone of privacy

One of my best friends is so much fun to hang out with in my opinion cause she has almost no zone of privacy or personal space. When I first met her I thought she was a lesbian cause she was always standing and walking so close to me and always touching me. After I got to know her better I realized that she does that to almost everybody male or female. I'm not a lesbian but when I hang out with her I feel a strong sexual desire cause she is so flirtatious. When I'm laying down, for example, she is comfortable in coming over and laying right on top me, or when we play music in the apartment she starts dancing with everybody really close.

She doesn't hold anything in and tells everybody exactly what she likes, but at the same time doesn't really say anything bad about somebody. I feel I know everything about her. I know she has slept with a lot of guys because she is so flirtatious and doesn't have many inhibitions. When we hang out I tend to have a lot fewer inhibitions. A lot of people don't like her cause they think she is kind of slutty, but I find her a release of stress and fun person to be such good friends with. So I guess my question is, is it normal for me to feel so relaxed and a sense of relief to have such a good friend that is always flirting with myself and other people.