Freeze response in dating

Does anyone else have this? I feel like the more I like a person the more my body shuts down and I can’t be myself. I just had someone I really like end things with me bc they didn’t feel a spark. I’ve become pretty good at still operating in it. I just don’t act like my whole best self. I come off just as a worse version of myself. It’s so painful bc I try to push through it but when people end things with me if they didn’t feel a spark I don’t know if they would have actually liked me because I didn’t give them the chance to. It feels like a curse.