Got another question.
You have Person A and Person B. Person B is, say, very passionate about a certain subject. Person A knows about this and gives Person B some hints as to indulge in his passion, fully knowing, they won't amount to anything. Person B goes and does stuff, fidgeting around, worrying unecessarily and making a fool out of himself. Person A is very much amused about it. Eventually the lie is revealed. And Person B confronts A about just why the heck he did this.
He would reply: Sorry, but it was just too much fun ____ you.
What's best to say for _____?
What A is doing is playing with B, poking fun at him, but this way of saying is clearly very negative. As is "pulling his leg". For that statement it ought to be something that kind of downplays A's bad deeds against B. (As he is in a state of self defence.) There is "teasing", but as far as I know that verb implies that B would have knowledge what A is trying to do, which he didn't because he was under the false belief, that A was helping him. "put someone on" looks just like the thing going by dictionary definition. But I think I have never heard of an "It was just too much fun putting you on."
Or is "It was just too much fun taking you for a ride." a thing to say?