Does anyone else have extreme trouble dealing with what comes after the honeymoon phase when dating?

I’ve only dated two people (I think I’m about to fuck this current situation up) but it seems like I don’t know how to handle it when the novelty of a new relationship somewhat calms down on my end and I’m dealing with someone who is ostensibly over attached and saying all of these wild things and love bombing me.

Things seemed to be going so well for us, but they suddenly became super physical when their lack of physicality was the exact reason I chose to date them in the first place, and that sort of took me aback :/

I’m posting in the nd forum because I suspect this is an example of not being able to deal with change (we’re on the same wavelength for a bit then I return to reality while they stay up in the clouds). It also takes up a loooooooot of energy. Shit suuuuuuuuuuuucks because I truly thought I had found the one :/