Most Helpful Guy
For every story you tell me like you and your ex boyfriend sleeping on the first date and having a wonderful relationship, I can tell you 20 stories of sleeping on the first dates and never talking to each other again.
Point being, don't ask a question and tell answerers that they can't tell you a certain answer. It's no coincidence that the contact was cut off exactly after you got sexual. He spent how long it was going to take to take advantage of you and then he left.
Unfortunately, you're a victim of a common online dating problem. If you decide to online date again, automatically assume that the person you date is also dating others, because I can almost guarantee you they are. The eggs in one basket thug deserves the best answer because it is absolutely true. When it comes to online dating, nothing is ever certain until you look at each other and say you're committed. Until then, pretty good odds that after that Friday night date with you, they're on a Saturday night date with someone else.
That's what this guy did and is still doing. He's out there hanging out with multiple girls hoping to get as much action as he can.
The lesson here? I've been in 3 committed relationships that were all long term, and nothing sexual happened between us until we were committed. I'd give that a try.