They want to keep it casual,don't like you pressuring them.
Have asked them out two weekends running and they said no.
Since then they've text you all day every day,been really flirty,dropped hints about meeting up but haven't asked you.
Now it's the weekend again and nothing.
Would you ask for the 3rd time?
Or leave it up to them and save your self respect and dignity?
Then if nothing by next weekend just mentally draw a line under it and find someone who actually wants the same as you?