[She could've passed it off as an accidental brush if Gai didn't lean in to nuzzle right back, not caring in the slightest if anyone catches him doing so. There's absolutely no shame on his end-- if there were, he would never have invited her to this wedding in the first place. He wants everyone to know that she's here with him.]

I think you stole my line, only in my case it would be "I have the most beautiful date here." I'd even say that you put the bride herself to shame if I were properly dressed to be able to deal with the angry groom.