Does anyone else find themselves fixing on perceived flaws in a new partner and find themselves swinging between being really excited about m the idea of being with them one minute and then totally not into it the next?

I’m just so frustrated because I met a guy and sometimes I feel I just like the attention, other times I’m feeling quite taken by him, and times beyond that I’m just not feeling into it at all. So once again I’m caught in a situation where I probably don’t want to be with someone (except sometimes I do) but would be upset if they called off our wee thing that we have going on.