How to talk to a girl without screwing it up?

tell her, "hey aren't you dating alex hinina?" she is gonna say no (if she says yes I'm be really surprised because shes lieing!) if she says no say "o then who r u dating?" if she says no one then say "o really? im asking because i don't want your boyfriend to get mad at me when i asked you for help on my guitar sound, after school" she might say "oh you play guitar?" "you is gonna say "yeah," or she might say "sorry cant after school" u say "o its okay that gives me time to finish this book" and u show her the book or say the title and u carry the convo on