Dear(aici pune ce numa vrei tu)
I would love if you could come with me so we can enjoy our vacantion together.Since we know each other so well,I am guessing that we can have so much fun together.We can go and swim,visit museums,play in the park,watch movies and so many other things.I hope that you will accept my invitation so the two of us can have so much fun
Your friend,(aici pune numele tau)