So it seems to me that letting him go further or asking him to leave is just further agreeing that there is no hope. I wanted to tell him how I felt, but was trying to follow LRT of no R talks.
That is good, Oxy. That shows you are learning to use your HEAD in this process, and not your EMOTIONS.
Smart DBing.
For the record, your fear expressed above is probably the #1 fear that newcomers to DBing express: "If I go dim/dark/LRT, won't that just push him/her further away?" It's understandable; this stuff is very counter-intuitive. But what it ACTUALLY shows him is "I love you (he knows that part already, trust me), and this is not what I wanted, but I'll be okay either way, and I value myself to not continue to put up with your crap behavior."
Which is -- bonus! -- simultaneously healthy for YOU, AND attractive to HIM.