travis and jodi's relationship was not pure. it wasn't chaste. they had this intense sexual relationship that they kept hidden from everyone. >> reporter: but jodi couldn't keep everything hidden, especially from travis's long-time friends, many of whom found his new love a bit odd and a bit troubling. >> we don't like jodi coming over to our home. we feel very uncomfortable with her in our home. >> reporter: david hughes recalls a chilling encounter between his brother, his sister-in-law, and jodi arias. >> well, they're having this conversation trying to convince travis to break up with her. she is right outside the upstairs door listening to the whole conversation. and she walked in, and she just had this face on like she was the devil, and she was going to commit a murder right then and there. >> right away travis's friends were concerned. it was clear that she liked him a lot more than he liked her.