I just wanna say Rayleigh is lying out his ass when he tells Roger he doesn't "wanna be tied down" with Shakky. That man definitely already feels something for her, but is holding back for the sake of Roger since that's his bestie boyfriend.
Because why doesn't Rayleigh want anyone else to know about Shakky's letter?
"I figured I should talk to you one on one Roger "
He knows this would upset Roger & he wants to discuss it in private AKA this is a serious & delicate situation.
At no point does Rayleigh deny having feelings for Shakky. He simply comes up with the convenient excuse of not wanting to be "tied down" as Roger angrily & in jealousy says " Well I do!!". He's trying to show Roger that he has nothing to worry about from him.
Rayleigh's face when Roger proclaims he's "not giving up" is the biggest clue. Oda gives him that ultra sunny & happy background, BUT he juxtaposed it with his thought bubble. "........" typically indicates some type of unspoken feeling or an awkward pause of some sort. Rayleigh is suppressing his true feelings & is putting on a fake smile. Trying to convince himself that this is what he wants.
Finally, why tf is Ray going to such extremes as to not be in the same vicinity as Shakky? He even lies about "not feeling good" while he stays behind, gets drunk, & sings Binks' Sake which is famously bittersweet. Man is coping hard.
IMO, Rayleigh is trying to be a good friend/first mate by suppressing his own desires for the sake of Roger. Roger in turn is being a selfish brat & not realizing that he's technically the random love interest meant to be an obstacle for the endgame couple.
HOWEVER, I do think by the end of God Valley Roger will realize the error of his actions. I'm willing to bet we will see Ray's mask slip or perhaps Roger will witness a moment between the two after she is safely rescued. Just think about Kinemon & Tsuru after she almost got eaten by that giant boar.
It will be at that moment Roger finally sees Rayleigh's true feelings & he will back off & offically let go of Shakky. I will be honestly surprised if Rayleigh doesn't make clear once & for all he does love Shakky during an incident where she is all but confirmed to be kidnapped. Oda loves to showcase the strength of his couples' bond by giving the man a dramatic "rescue the girl" moment.
It would also be a nice parallel to when Rayleigh pulled up to Amazon Lily to rescue his pseudo daughter Hancock. That might've not been the first time he has come to a young woman's rescue.
Notice how after this, Oda frames Rayleigh, Hancock, & Shakky close together? This isn't Ray's first rodeo. 👀
This even puts a more pleasant spin on Rayleigh's introduction words:
Not only have I recently seen people say a more accurate translation would be,
"I can't just ignore a beautiful young girl "
it's important to remember Rayleigh was in the middle of helping Camie who just recently been abducted & put up for auction.
He was quite literally seeing a young girl being scared & abused by the CD's. Could this have reminded him of his wife?? Since it's all but confirmed that Shakky was kidnapped in a similar manner? 🤔
Also, remember how we love to say Rayleigh & Shakky are in an open marriage because of this dialogue?
Knowing what we know now about Shakky's past....was this another tongue in cheek moment from Oda? Is it possible that Rayleigh likes to spend his time freeing young women from slavery on the Sabaody Archipelago? Did Rayleigh & Shakky specifically move here so they can help trafficked women? I honestly wouldn't be surprised if that was the case.
In conclusion, Oda is going really fucking hard on the shoujo angle! This flashback seems to be doubling as Rayleigh & Shakky's love story & I, for one, love every second of it!! 💕