I like how most of the date options are sorta nebulously-aged young adults; leaves player some wiggle room to read them and the player-character as different ages. Good design for minimizing date-creepiness IMO!
As for dates, Harvey's sorta cute and dorky, but he showed no appreciation for a gift of opium poppies, which I thought was rather clever. Penny's got a good heart, but she's a bit of a passive sad sack with her resignation to her shitty home life. Abigail's fun, but she seems a bit too Manic Pixie Gamer-Girl, and that sends up red flags. Elliot is just a walking Romance Novel Cover, and his huge and beautiful hair intimidates me. Leah would be fun to hang out with, and I appreciate her artsy side, but she seems judgy and buys into the whole Pastoral Superiority thing. I like technology too much to be happy there, I think.
Maru, however, is my dude. <3
Maru seems interesting, but I had a bad habit of guessing the exact wrong gifts to give her early on and got annoyed with her. (Seriously, what kind of science-focused person thinks a geode is a terrible gift??)
Eventually I started using the wiki and that made things easier, since figuring out gifts for people if frustrating and expensive otherwise.
Yeah, that Geode thing weirded me out too! She seems like some kind of rockhound, since she likes the crystal and mineral samples that come out of them well enough. I thought it'd be like a little self-wrapped gift; hell, we could even open it together and it would be all cute and shit. But no. Still, we can chat about the scale of the universe and stuff while she's looking through her telescope.
Speaking of which, I'd love to be able to do Date-ish things as part of winning someone over, like stargazing or going caving, or even fiddling with robots. Also, I'm curious to see if your relationship with your sweetheart's family influences things. Just to be safe, I worked hard to win over her Dad with a bunch of cool botany samples, after an ominous warning about getting in the way of her bright future. Excuse me Demetrius, but Agricultural Science is a real science!
P.S. Anyone else start giving Linus food gifts after he was rummaging through the town's trash? I'd pay to build him a coop-sized shack or something if I could. Dude's gotta get cold in the winter, and I worry about him. ><;