Hi Rushia,
If you started online dating with the intention of finding a serious relationship, this is not the guy for you.
Yes, it would be best to delete him from social media and continue with your life.
Waiting for him would not be to your benefit because you would both want different outcomes.
He had sex with you on the first date and clearly conveyed the message that he wanted to only have sex on the second date.
Even though the both of you got on so well on the first date, he has clearly shown what his true intentions are.
A person can seem really amazing when you first meet them.
However, that doesn’t always mean that the person has the purest of intentions.
The woman that he was with for ten years prior to his meeting you shares a number of similarities with you.
You share the same birthday, height and come from the same country.
Though you are looking at this as something that was meant to be, it may be the complete opposite.
It may have been something that came about by design.
Ten years is a long time to be with someone and he may not be entirely over her.
Hence, he may have sought out someone like you so as to remember her.
However, if his feelings are still strongly tied to her, he would have little room, if any, to care about you.
This may be why he showed more interest in going to bed with you for a second date than in actually getting to know more about who you uniquely are as a person.