"i can't handle the way you respond whenever i say it." - um what the? he has said it three times and first time i laughed, 2nd i giggled and said thanks and 3rd i just smiled and kissed him on the cheek. - was it that bad?
That made me laugh. Put yourself in his situation. Pretend for a second that you're really certain that you're in love with your partner, so you decide to tell them. They laugh. Not to be put off that easily, you give it another go, and they laugh again. Third time, still no response. Gee, I wonder what the obvious conclusion is there, seeing as you don't appear to have actually explained *why* you won't say it back, or why you think it's funny when he says it.
He was probably wrong going off about it, but you'd have to be a moron to not understand why it happened. It's not really that difficult to say "I really like being with you, but I'm going to wait until I'm really sure that it's love before I say so, because when I do I really want it to mean something", rather than just laughing at him, repeatedly. You've said basically the same thing here, it seems strange that you chose to explain it better to us than to him.
