There's such a huge deal made of him and his girlfriend who he leaves behind in England, he sings to her before leaving, and as we can see later he didn't mean a single word of it. It made him very unlikeavle. There should have been a small breakup scene (where he writes to her or she writes to him to break up) before he got involved with Lucy. I feel like the girlfriend's only purpose was so that "All My Loving" could be used.