oh god I lol'ed.
Your sister in law is a dumbass no offense.
What kind of dipshit loans 10k to someone for a wedding? Let alone when they can't easily pay it back?
Oh and your chick lied, and f-ed you in the A. Sorry dude, but you need to figure shit out. I wouldn't trust my wife.
Honestly I'd rather she fucked another dude than got me into debt I couldn't get out of... Cheating only hurts my emotions and wallet once for a divorce. Debt hurts me once a month for a long ass time.