Since it's Sunday evening, and I'm still having Downton Abbey withdrawal pains, here's something to consider: Matthew Crawley and Lady Mary are finally engaged, but, after a fight the day before the wedding, it's called off. Matthew has a revelation, comes to Mary's door that night, and tells her he's realized, "I could never be happy with anyone else as long as you walk the earth."
I think between Jodi returning to CA in April and her deadly return in June, her obsession with Travis was tormenting her 24/7. She wasn't there, so thoughts of where is he now, who's with him now, what's he saying about me, what're others telling him about me, etc., etc., were eating her alive. When it became obvious in his May 18 blog post that there was no possibility of his future ever including her, he had to die if she was ever to "move on" and find happiness with someone else.