spotting out

When you spot someone really attractive and make excuses to pass by them (multiple times) in hopes they might notice you.

I saw you walk past the same part of the caf today twice! Who are you spotting out?!

"Why does Katie keep leaving the table??
"Oh she just forgot napkins first, then she wanted coffee, and then she forgot a straw so she's left a few times."
"Ohhhhh C'mon, she doesn't really need those things, she's just spotting someone out."