Loans can spiral to bad debts with ballifs chasing unpayed payments, more penalties being added etc...you don't really need to buy your fiancee a 30k car, now do you, Greese?....she'll still love you in the morning, buddy.....wedding can either be put on hold till you get enough saved for it, or there are much cheaper options ......if you can't wait, but the cost of all involved....the flowers, the catering, and drink, photographer, recording it, function hall/hotel hire and not forgetting those pesky, annoying, overpaid DJ's, who do more talking, than play quality tunes , and talk into the mic so close, you can't make out a word he says...(not guilty, folks, on all counts)........you don't need that unless you can pay for it without having a loan for it.
Think before you sink, is my motto. Best of luck, to both of you, Greese :-)