[Scott Baio is back]

Captain-

Ahh, I know the feeling. Here's what you need to do. You need to make sweet love to the one who REALLY wants you bad. Then, you say to the one you really want..."hey baby, ya know, I scored with (insert name) last night. But anyway, about you and me...."

NEVER mention the other girl again. Simply drop the name that one time, and you'll draw your true interests attention. Then, do her.