What is the most intimate romantic/sexual thing

What in ur opinion is the most intimate experience u wanna try or have tried, There's a bunch of options like cuddling , kissing , sex obviously and a lot more I could keep going on

Me personally something i really wanna try is showering with my partner I think it would be the most intimate thing or cuddling really.

(i know there's a thread like this talking about whats the most romantic thing ur partner can do but this is different since it's about experiences)
doing favours for eachother or cuddling together skin to skin