How did you know...

Soooooo...I’m with a guy I’ve been with for a while and we’re in a good place and nothing’s ever really been bad between us buh the topic of sex pops up every now and then...don’t get me wrong he’s super respectful about my decisions and understands when I say no or that I’m not ready and he never forces me to do anything...buh lately I’ve been thinking about it a lot lately...and I’m kinda at a loss.How did you guys know you were ACTUALLY ready for more??