One rushing into a relationship?

• Impatient bride, perhaps
• One who skips church, maybe
• Certain ladder-user
• Runaway bride, say
• One headed for a hitching post?
• Romeo, e.g
• One running off to marry
• One running off to get married
• Justice of the peace customer

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Eloper \E*lop"er\, n. One who elopes.