The answers to the clues below will have something in common.

1. Theater alley suitor
2. Worrywart
3. Affable, pleasure-loving fellow
4. Typical guy
5. Voyeur
6. Pieman meeter of rhyme
7. She goes out with other guys

Answers:

1. Stage door Johnny
2. Nervous Nelly
3. Good-time Charlie
4. Average Joe
5. Peeping Tom
6. Simple Simon
7. Run-around Sue

Credit (#1-3): 
Bob Frank