Surprised nobody has mentioned Gaius x Muzet
The way she talks about him filling her with loads of mana, good lord, and she isnt even doing it to tease like she did with Jude.
She just loves talking about how dominating yet kind he his.
The "fill me with loads of mana" was with Jude in the first game.
Muzet was just straight up using them, so I never really considered that an actual relationship, though I absolutely adore Muzet. I like in Xillia 2 when Gaius is surprised to find out about the intimacy of direct tethering.
I've been spending the past several months going through the series in English in celebration of the 25th anniversary of Tales, so this is a topic relevant to my interests.
If there was any romance in Phantasia, I didn't notice it. Same with Destiny. The awful English voice acting in Eternia killed any chemistry the characters may have had. You could see they tried doing something with Meredy and Keele, but the writing and voice acting just wasn't there.
Lloyd and Colette isn't bad, but the only development you get to see is if you do the affection event with her. I went with Lloyd and Sheena on my first playthrough.
Legendia is eh. Senel and Shirley come off as incestuous, which I find a bit creepy.
I love Tear so much, and she's one of my favorite women in gaming of all time, but fuck that stupid ending to Abyss. Who even is that?
I love Emil and Marta in Dawn of the New World. Marta's character totally gels with me, and they actually get to kiss.
I liked Ruca and Illia in Innocence, but there was no closure in the DS version; not sure about the Vita remake. He confesses his love for her, and then in the ending she just leaves along with everyone else and nothing else said.
Estelle and Yuri? I love Estelle just because I'm an Eden Riegel fanboy, but I don't really like Yuri. Relationship doesn't go anywhere. I'd rather pair Estelle and Rita. Not a fan of Vesperia, anyway.
Shing/Kor and Amber/Kohaku in Hearts would have been good if it weren't for the fact that their relationship started with Shing/Kor wanting to sexually assault her.
I love Asbel and Cheria. I love everything about Graces. So glad the Lineage & Legacies chapter fleshed them out a bit more.
Fuck Jude. In Xillia 1, Leia was chasing Jude, and Jude was only into Milla. In Xillia 2, Leia and Alvin have a much closer relationship, but considering Alvin almost killed her in the first game, it seems kind of out of place to me. The parent/guardian relationship with Ludger and Elle trumps everything, though. I get teary-eyed just thinking about Xillia 2's ending.
So disappointed with Zestiria. I loved, loved, loved Alisha and hated what they did to her. I never thought of Sorey and Mikleo as anything more than platonic, but if people want to take more from it, then that's cool. Hell, I would have been ecstatic to have an Alisha/Rose romance. I feel like the game originally started out with the intention of having Sorey, Alisha, Rose, and Sergei as party members, and then Alisha and Sergei got cut.
Berseria was too dark for any romantic relationships that I remember, but I haven't gotten back to replay it yet, so I may have forgotten some of it.
Tops for me are Emil+Marta and Asbel+Cheria, just because they actually have some closure. Nothing in the Tales series comes close to Alicia+Welkin in Valkyria Chronicles, though. That's my high bar.