Feeling I ve been taken for a ride update

Well if you read my previous post , I really took on board what you said and I am grateful for all your advice
My ´friend’ however , still keeps sending me texts and phones me
I feel uncomfortable telling him outright that I d rather have nothing to do with him as he might think I am jealous etc and although there might be an element of that , I don’t want to give him the satisfaction of knowing it
So , has anyone got any ideas how I can convey the message that I am not interested
I still don’t think it’s right of him to show that much interest in me if he has somebody else lined up
If you are just a friend , you don’t keep texting etc
It doesn’t tally
Would be grateful for advice please