“The question was how to make him stop saying inappropriate things to me? “
Oh, I am so confused, I thought this was the question:
“Would it be okay for reb shidduch to date someone like this even if he does not want to learn full time and he went OTD and came back on and is trying to be as frum as he can for reb shidduch?”
Seems you have answered the first question.
As to the second question, you said that you play music together (“he somehow convinces me to put not Jewish music on”) and have told him about your ideals for marriage (“I talk about moving to lakewood and marrying a full time learner all the time in front of him. “). Why are are you talking/spending time with a guy at all? Maybe if you stopped sending him mixed messages, he will get the hint that you are not his type.