Online dating - how to find the decent ones?

[Celia24]

I joined last week. Mostly the matches were a no go, or nice but not very interesting.

Then one guy caught my attention. Similar degree & similar interests as well as different things I found interesting. He's actually a friend of a friend and considered a good guy. Average looking but had a warm smile.

We talk back and forth all very polite and finally he tells me he's mainly looking for casual fun. It was pretty disappointing. I've done casual before but now I want either serious or someone that doesn't label me just 'fun' only from day one.

How do you figure them out early on? For the record my status is set to 'long term, open to short'