Hi!
I'm gonna tell you the same. The guy is interested in you.
That's not bad. I understand your fears bc you were abused but trust me, this kind of things happen all the time and it doesn't mean the guy is an abuser.

You did the right thing putting a distance. Why wasting time with someone who makes you uncomfortable. He has to know that you are not interested in him.
I think there are people(example: this guy) who seems to have a 6th sense to smell people who need friends or are friendly or are sensitive towards others and they go straight to their prey.