Haa.... Kyle plays around with other girls so no way he won't cheat on her.... Poor her.

Do you really think so? It looked like casual "dating" to me, I don't recall seeing him in a relationship with anyone (and the amount of skinship was very minimal). Furthermore, when he said he was dating the FL, you never saw him alone with another woman, let alone flirting with one. He always ensured that his "girlfriend" was present as a guarantee to his conduct.

Which is very good courtship behavior, I'd say. I can't speak for the entire rest of his life (or hers), but I find it a good start. Personally, I'd be more concerned about the FL inadvertently forming a harem. ╮(￣▽￣)╭