Does Aria ever make Mona stuff like jewelry?: Yeah, I feel like she would just surprise Mona with small gifts of like jewellry she’s made.
Would Mona actually like it or wear it only to be nice?: Mostly just to be nice. Her style and Aria’s style aren’t really compatible.
Does Mona buy Aria stuff, and would Aria be okay with that?: Most of the time Aria would be okay with it unless Mona bought her something crazy expensive - something she would do for Aria’s birthday.
If they were to get married, would they fight over money?: Nah. not really. Just like…who pays for dates.
What would be some obstacles in their relationship?: The whole A thing obviously, Aria’s friends’ feelings toward Mona, Alison, and what they’re going to do about college.
If they ever had a threesome who’d be their third?: Mona suggested Hanna, that was quickly shut down by Aria because of Mona’s feelings for Hanna. Aria suggested Spencer and Mona shut that down for the same reason. Emily. They would go with Emily if she wasn’t with Paige at the time.
Does Mona hold Aria during horror movies: Yeah, for sure. Aria pretty much demands it.