I did online dating for 5 years and got nothing but horrible relationships and dating experiences from it. I'll never resort to online dating again. I'm nearly 50 and here's what i've learned about men and dating: if you sleep with a man on the first date, you've just devalued yourself in front of him, and he sees that you have, so he doesn't view you as valuable of a chase anymore. Doesn't matter if he's a nice guy or a toxic guy. Remember that idiom, "why buy the cow when you can get the milk for free?"

He wasn't sick. That was an excuse not to see you again. He'll probably breadcrumb you with a few random texts here and there while he figures out how to fade away from you. You've already slept with him, so he doesn't feel challenged by you.

Since you already know your weaknesses, I'd work on those if I were you until you are ready to date again. Take your time getting to know the guy. Postpone sex until he verbally asks you to be exclusive. Not saying you have to act like a virgin, but for the sake of argument, take sex off the table until he shows and tells you he's ready to be in a relationship with you. That could mean you date each other for a month at the very minimum before you have sex. Dating should be about talking and learning about each other. It shouldn't just be about sex. First, try to figure out if he is a guy you WANT to be in a relationship with. And then if he is, go crazy and have all the sex you want. But until that point, just don't do it. Or you'll repeat a dysfunctional pattern like you have been and get nowhere with your goal of finding a healthy relationship with a guy.