What do you think of Daenaerys and Daemon epic romance?
Anything is possible, but it’s awfully convenient if what he felt in his heart just so happened to serve a narrative that obfuscated the ugly reality of a violent attempt to overthrow a peaceful government while dog-whistling the old “they’re stealing our women!” canard to anyone who could be motivated by anti-Dornish sentiment. Even if not outright propaganda, the whole thing reminds me a lot of Littlefinger’s fixation on Catelyn. The idea of taking his sister as a second wife would be an unequivocal validation of his Targaryen-ness. So even if there had been some real attachment, the impetus behind it is pretty suspect.