*My impressions. Don’t get mad please.*
Levi: Gay. We’ve never seen Levi mention any type of romantic relationship. But I think he’s gay. Isayama has mentioned that Levi likes tall people, and he does have a mild obsession with a blond 6′2 Commander. Also, he’s wearing Erwin’s Jacket.
Erwin: Bi. We know he at least likes women because he mentions an interest in Marie, a woman he met at bar while in training. but there are reasons to believe he’s also interested in men. or more specifically his right hand man.
Hanji: Nonbinary, and Moblit all the way. Kind of debatable. In the manga, Hanji’s gender and identity is up for reader interpretation, but the anime seems to have decided on girl. Either way, Hanji is one of my favorite characters and I love watching them.
Moblit: Whatever Hanji needs him to be.
Mike: Straight, probably has a thing for Nanaba. Isayama said Mike thinks she is the best smelling member of the survey corps and smells like fruit. 99% sure that’s slang for ‘they’re dating’.
Nanaba: Probably straight maybe Bi.
Eren: Straight, but to obsessed with Titans to date.
Mikasa: Straight, but to busy protecting Eren from Titans to date.
Armin: Unknown. I’m really not sure here. I’ve never gotten a romantic vibe from him. maybe. Ace.
Reiner: Bi (Ymir makes a pass at him being interested in guys, and he’s always trying to get with Christa, so it must be both.)
Berthold: Straight. I know some people pair him with Reiner, but I never really got the vibe he returned the affection in a romantic way. If I had to guess I’d say Reiner liked Bert, but Berthold just wasn’t into him that way. Reiner would’ve been sad but he’s such a bro, so he tries to get Bert and Annie together because he wants Bert to be happy.
Ymir: Straight up lesbian love
Christa/Historia: Lesbian, maybe Bi. However, there were a lot of guys that showed an interest in her in training, but she only ever returned Ymir’s affections.
Marco: Gay (you don’t look at your ‘buddy’ the way Marco gazed at Jean like he was everything good and right in the universe)
Jean: Bi. Jean has a crush on Mikasa, but I think he had a crush on Marco as well. I like to think Jean never really grasped the depth of his feelings for Marco until his death. :C )
Sasha: Always a slut for potatoes
Connie: Straight, probably has a thing for Sasha.
Petra: Straight, and probably had a crush on Captain Levi. I bet the others tried to tell her he was gay, but she never took the hint.
Oluo: Straight, I think he acted like Levi because, yes Oluo respected him, but also because he liked Petra and wanted to be more like Levi to impress her.