"If I fell" is somewhat more mature and has more to do with real life as a love song when compared with
Hello little girl
I can remember it being crooned by all and sundry in the bars of Sembawang near the Singapore Navy Base in 1966/1967.
In this song, the singer is not quite the twerp as heard in "Hello little girl" and tries to make to make a deal with his new love before abandoning an old.
For me, this song has a lovely melody and the lyrics are super cool. The version that I sing and play can be found in Beatles Songs for the Recorder