Mixed messages are just part and parcel of the romantic terrain, and rather than berate yourself for any crossed wires, you'd do better to work on your future resilience.
You only need to look at Jane Austen to see how crossed wires can become a defining aspect of romantic life. Then again, if the course of true love ran more smoothly, it would have a terribly detrimental effect on our cache of love stories.
Girls have a tendency to take responsibility for romantic misinterpretations, when often it's men whose perfectly honed emotional inscrutability makes life more complicated than it should be.
Romantic comedies seem to take over where the fairytales of childhood left off, feeding our dreams of a soulmate; though, sadly, the Hollywood endings prove quite elusive in the real world.