I read Catcher in the Rye for the first time and I had a question

The poem "Comin' Thro' the Rye", that the book takes its name after, is apparently pretty sexually suggestive. With the lines such as "body meet/kiss a body" being a metaphor for sex, and how Jenny is "seldom dry" with her wet pants. My question is what do yall think is the significance of Holden mishearing the line "body meet a body" as "body catch a body", thereby laying the foundation for his fantasy of catching children playing in the rye from falling off a cliff? I know Holden has a lot of complicated feelings when it comes to his sexuality and sex in general, but I'm curious what the symbolism of a sexually charged poem being the inspiration for his fantasy of protecting children means?

But yeah, this book depressed the hell out of me. It really did. I must of bawled my eyes out about a goddam hundred times reading it. I felt sorry as hell for Holden, I really did. And at the very end when he's so damn happy watching Phoebe on the carousel, that killed me. God I wished I could have been there