I really liked both Mel and Jack. Normally that doesn't happen. I tend to really like one of them and be okay with the other. If I dislike one of them it tends to be the guy (assuming hetro here, sorry). Not really sure why, but there it is.
I wasn't too sure about Mel at first, since she really didn't seem prepared at all for living in Virgin River ($400 boots, really?) I can't blame her for wanting to leave LA (not much of a city girl, really) but that was a big jump, from LA to Virgin River.
I really liked that she said she'd stay for a few more days, then a week and so on. I knew as soon as she said a few more days, she'd end up staying forever.