I do not read romance novels. I hate the covers, therefore I think the entire genre sucks. Yes, I do judge these books by their cover!
One novel about love that comes to mind is How Stella Got Her Groove Back by Terry McMillan. It's a story of a 42 year woman who goes on a vacation to Jamaica and nabs her a 21 year old man. What was supposed to be a one night thing has evolved into a wonderful relationship.
This novel is just one of those feel good stories that reminds you that anything is possible, and it can be very unexpected.