Making Sex Just Sex

After I sleep with a man I feel emotionally bonded to them, even if we are not in a relationship, why does this happen and is there any way for me to make sex just sex?

I would like to offer this definition of sex: Sex is the expressing and receiving of physical and emotional pleasure. Sex is the loveliest way for us to share with one another as it becomes the physical extension of our expression of how we feel about ourselves. This being said, I believe that you may be misinterpreting these bonding feelings that you are experiencing and attributing them to your sexual partner when in actuality you are reconnecting with yourself in the most loving way and it is being reflected back to you by your sexual partner during the expressing and receiving of physical and emotional pleasure. When we are connected to ourselves (loving ourselves) and in alignment  (thoughts and feelings in harmony) with having sex, it becomes the most natural way that we can hook up with each other.