Am I dumb for being faithful to a guy a broke up with?

I act like I’m taken. I don’t even want convos w/ new guys. I’m in love with him and don’t even want to be touch by other men never again or with new guys say the same words I used with him. I let him go because I have avoidant attachment, he’s younger and more attractive than me and I assume he only wanted sex since I’m always reading people’s actions even though he acted like he actually like me.
Am I dumb for being faithful to a guy a broke up with?
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