Marley & Me when he tells Marley he's a great dog.
If it has to be mushy, then in A Walk to Remember after he makes some of her wishes happen and she's says, "I told you not to fall in love with me," etc. lol
[video=youtube;9xEBc8MtmOc]https://www.youtube.com/watch?v=9xEBc8MtmOc[/video]