When Phil Diffy and Keely Teslow become a couple in "Back To The Future (Not The Movie)".
Keely: We do kinda hang out a lot... together. Phil: Yeah. I guess someone could... mistakenly... think we're one of... those things Keely: Yes yes, they definetly could... mistakenly Phil: Unless... do you want to be a couple? Keely: No! Phil: No... Keely: Do you? Phil: No... Keely: Yes! Phil: Yes? Keely: I do! Phil: Me too! Keely: Yay, we're a couple! Phil: Shh! Keely: Phil, the whole school just voted us cutest couple. I think they know.
When Phil Diffy and Keely Teslow kissed in "Back To The Future (Not The Movie)".
Keely: Phil! You're still here! Does that mean you're not going? Phil: No, no I'm still going. Keely: Oh. Phil: I didn't want to leave without saying goodbye for real. Keely: Yeah Phil: [kisses her passionately and everyone cheers]
Phil: [pulls Keely into a hug] Keely: [whispers in Phil's ear, so that only he could hear] In the future will you wait for me? Phil: But... Won't you be really, really old? Keely: [Gives him a knowing look, and smirks] Phil: But that shouldn't matter...See ya, Salt. Keely: See ya, Pepper. [pulls him into one last kiss]
When Keely kisses Phil on the cheek in "Tia, Via, or Me...Uh"
Keely: [Keely arrives and kisses Phil on the cheek, pleasantly surprising him.] That's for introducing me to Via. Phil: I get a kiss every time I introduce you to a girl. [grabs random girl heading down the hallway] What's your name? Have you met Keely?
Keely telling Phil how wonderful he is in "Christmas Break".
Keely: Phil Diffy, Your the most wonderful boy I have ever known.
Keely's reaction to Phil's birthday gift in "Happy Nirday".
Keely: This is the sweetest, most wonderful, Incredibly beautiful thing anyone has ever done for me.
Phil telling Keely how much she means to him in "Time Release Capsule".
Phil: I thought being remembered a hundred years from now wasn't important. But I'd give a hundred years of memories just to remember the most important, special, wonderful person I've ever met...Keely Teslow."
When Phil and Keely acted like they were married in "Dinner Time" and Keely calling him a Sweetie Pie.
Phil: I wish you did remember though, for a while there it was kind of like we were married. Keely: Was it fun? Phil: Yeah... it was fun. Keely: Cool, well I better get to class. Phil: Yeah Keely: See ya at lunch sweetie pie [stops then turns towards Phil] I-I mean Phil.