[Tugs on his hand, drawing him closer and reaching out to take his other hand, squeezing both gently]
I care for you. And I care for Guinevere. [Looks down for a moment] And... considering our conversation from earlier, I... know it's selfish of me to say so and to feel this way. But my feelings for you have nothing to do with how I feel for Guinevere. Or the other way around.
[...]
And even if you do look completely different from her, you're very pretty, Merlin. You don't have to worry. You're the prettiest person in Miracle Country. [:'| Means this honestly even if he says it slightly teasing]