Dating?

I've been using dating apps again on and off for the past month.
This time round I tried Okcupid, and I actually matched a guy and met him (S) earlier this month for an art jamming session.
S is a very nice guy, outgoing and ambitious too. The fact that he works in public service also makes it quite easy to converse with him.
However, I was not physically attracted to him... and I just told him about the fact that I am emotionally unavailable haha

Subsequently, I met WJ off CMB, who can actually be considered my FASS senior.
He is a fun person, easy to talk to.  We spent a long evening over dinner and ice cream ytd.
And he was gentlemanly enough to send me home even though he stays in the East (coz he drove, out of so many guys I've dated he is only the second guy who has a car).
I guess, I quite enjoyed talking to him? So I had my expectations haha although I did feel our texting was rather contrived.
And today, he did not reply my texts, which made me slightly disappointed but on hindsight, I'm actually glad he did not. 

And over ytd's convo, I realised I have yet to move on.
What then, are my intentions on the dating apps?  Is it really to know someone new? Or just to find a replacement?
The latter is more likely haha
And... until the day I learn how to be happily single again, it is quite difficult for me to enter another rs, especially when I'm still reeling from the remorse of the previous rs.

For the past 3 years, I've not been single longer than 4 months.  It was one rs after another.
Today, after the emotional uproar I felt following the 'rejection' from WJ, I realise it is really me not being able to be single and be alone by myself.
I constantly need someone to be with me and rely on them.

Maybe loneliness is the reason.  I should learn to sit with myself and my loneliness, maybe that's when I will be able to hold myself responsible for my own happiness and that's when I can manage my expectations.