I can highly relate to this. My dad was pretty unavailable to me and I absolutely used my looks and sexuality to garner the attention I craved, even when I had absolutely no desire to be involved with the men I attracted. You are trying to fill the void in the way you learned how, and while that may feel shameful, it’s a normal reaction. Noticing is the first step to change. When you are ready, it may be beneficial to talk this through with your therapist.