"Oh, I think you know...sometimes I like to have a little bit of fun with somepony I'm very close to..."
"Ummm..."-She said. (Mate, please explain this clearer or somewhat.No offence, but I would really think of some sort of sexual abuse if this was real life)
(Alright then. Why don't we just do things your way then? If you want this to go smoothly, you should really just try something yourself.)
"Hey...I don't mean to sound weird or creepy or anything like that...I just tend to enjoy hearing ponies laugh...like another certain pony that lives around here, I gather?..."
Gets up and slowly walks around the room... "So yeah...I know it may sound weird...but I do quite love tickling...as well as being tickled myself. Used to have lots of lovely tickle fights with my friends back in Canterlot..."
"Really?"-She said.She found it a bit weird, as nopony ever done that to her, but she found that amazing as well. Then she started to use her nose to nuzzle(tickle) his belly.
"You like this, don't you?"-She said, smiling.Then she pushed Goldie over the couch and tickled him even more.
This was the hardest he had laughed since he came to Ponyville, and after it stopped there was a huge smile on his face, along with a slight blush.