GARNER'S COLD FEET A KICK IN GUT TO FIANCE

Burger baron ready to flip over delay

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LOVEBIRDS Jennifer Garner and John Miller have put their problems behind them and are once again packing on the PDA — but the 13 Going on 30 beauty's reluctance to get engaged could sink the couple's romantic boat, sources say.

According to tipsters, Jen, 53, adores the 47-year-old burger chain CEO, but she won't commit to setting a wedding date — or even agree to an official engagement — which is causing more strife in their on-again, off-again relationship.