Meigh is obviously attracted to Sisco, he's the anti-Ralph: he's an actual man of faith, he never gets upset, his emotions are firmly under control, he doesn't need xannyberries to function IRL, he's cordial, he's taller and stronger than Ralph, statistically speaking his dick is likely to be bigger than Ethan's, he's not a felon, he's not obese, he probably has a family, he's an actual politican, the list goes on.
Watch the first cookout again and notice how May smiles only when she's looking at Sisco, and she even refused to kiss the Gunt in front of him.