I take it you're familiar with the Golden Triangle area of SE Texas. Back in the '60s as soon as you crossed the Sabine River and entered La, there were a number of night clubs along Hwy 90. As you know, the drinking age in Texas was 21 and in SW La, it was a very loosely enforced 18. That's where I "bumped" into Jimmy.
If he did, then he would have carved out the letters JJ loves JJ. And, you wouldn't be able to decipher whether he meant himself or her.