Possible Clues:

• Leave, as a lover
• Abruptly ditch (a lover)
• Suddenly say 'I don't' to, say
• Blindside, as a lover
• Ghost at the altar?
• Prison's no answer with time in dump
• Leave at the altar, perhaps
• Leave in the registry office for Jack with leads? I like that!
• Reject, as a sweetheart
• Cast aside