Had a feeling he was probably a looker.
Think of it this way op, do you think it's OK to tie someone you've never met to their phone 24/7? From good morning texts to questions about their exs? Probably not...(at least, not without them being the one to set that boundry-lacking standard to begin with and make you feel they're OK with it so you should be too).
Most people have a life, they don't need to be messaging someone hundreds of times a day.
Chances are you were so flattered this 'hot' guy was paying you attention that you overlooked the inconvenience of it. Found yourself forgetting to drink that cup of tea you made. Missing the end of your tv program. Running late for work.
Normal people consider that you have a life outwith them. Narcissists however, want your attention on them 24/7. So they love bomb. They tell you they have feelings for you...not because they do, but because they want YOU to have feelings for them -- because that feeds their EGO. And, makes you easier to con/abuse.
They say things to make you feel they are safe people you can trust. To get you to lower your guard. Flattery and sweetness. But it's all to lure you into a false sense of security. And to get you to ignore them trampling over reasonable boundaries.
If it had been a mate messaging you hundreds of times a day, you would likely have told them to knock it off. Because its not respectful. But you excused him because he drew you into his Web, like a spider.
You've had a very lucky escape. It could have been much worse.
Also... bare in mind you can use Google reverse images search on mens profile pictures... just incase he's an ACTUAL con artist. It might bring stuff up on him.