Teddi Mellencamp and Edwin Arroyave's divorce could get messy. A source claimed the latter is "determined to come out on top" in their split after it was revealed the blonde beauty had an affair with her married horse trainer.

Teddi Mellencamp looked forlorn while saying goodbye to estranged husband Edwin Arroyave after news broke of her affair with her horse trainer, Simon Schroeder. During the intimate moment outside of their family home in Los Angeles on Wednesday Mellencamp,

One source claims to Page Six the mistress was Mellencamp’s “best friend,” while a second source insists the women “maybe interacted four times at most.”