Remember to use reverse psycology; The more you seem to like the guy the more likely it is for your daughter to break up with him. If you really don't seem to like him your daughter will glue herself on him. Literally.

I guess it's natural for fathers to feel jealously. I'll let you know when I have figured it out...( 1 : have a daughter. 2: wait for 16 year. 3: Commence research)
"It doesn’t matter if it’s man, woman, or beast - bring ’em.."
Trish Stratus