Lay All Your Love On Me by Abba
Before he started dating Penny, Leonard had never been the jealous type. Of course before Penny all he had dated was geeky girls who weren't exactly pretty. But now that he had a pretty girlfriend he was convinced that she would leave him for a more attractive boy. He wished she'd just commit to something so he wouldn't have to worry.
"What did you do to me Penny?" he wondered, "I'm not the same anymore. I haven't been since you entered my life."
He had dated other girls certainly, Pryia and Leslie among others, but he had only wanted to be with Penny.
"Please Penny, love me so I won't have to go through this anymore. and if you can't love me, please release your hold."
Leonard's train of thought came to an abrupt halt as he processed her words. "She loves me?"