Who initiated the relationship?
John's the one who most likely started flirting with you first, implying he found you attractive and would not be upset to find you in his bed one night. Despite this comment, made while he was drunk off his ass, John is pretty sweet when he's trying to win some over, his compliments becoming less sexual and more genuine. He would also be the one to try to make the relationship more official, though that might only come after years of being romantic with each other, because he fears he might not be a good enough partner for you. Once he's over this fear, however, he feels stupid, realizing it just looked like he wasn't willing to commit, and he even admits he's surprised you didn't leave him for that.
Who kissed who first?
You're not a huge fan of your first kiss with him, mostly because he was acting a fool, something you realized at some point he did very often. He's the one who leaned in first, drunk, pressing his lips against yours in a rather sloppy kiss that left you questioning his skills. Still, you liked him, so you simply wiped the slobber off your face and patiently told him you'd like to re-do this moment when he was sober. He's clearly embarrassed by how he acts and the second first kiss is much more tender, with him cupping your face and looking in your eyes before planting a much less sloppy kiss on your lips.
Who said 'I love you' first?
This comes after a tense moment, one where neither you or John knew if you'd live to see another day. With your life in danger it really makes him realize how much you meant to him, and how little he's managed to translate that over the years of your relationship spent together. He has plenty of things he wants to say stored in his head, all the things he loves about you, all the things you've done to make him happy, to support him, but all his muddled brain can get out is a simple 'I love you' once the danger has passed. It was good enough for you.
Who needs to be touching their significant other at all possible moments?
You're both the regular amount of touchy-feely, especially in front of the others in camp (John hates being teased by them for showing you affection, but it doesn't always stop him from doing it). He likes to have an arm wrapped around your shoulder or waist while you're sitting around the fire together, and when you're alone he likes to hold your hand, stroking the back of it with his thumb as he looks at you like a lovestruck fool. Which he absolutely is.
Who likes to cuddle more? (Who's little spoon? What positions?)
John doesn't tend to start cuddling because if you're curved up against him, ass in his crotch, he knows he's going to get a hard-on and ruin the cute moment. He prefers cuddling with him laying on his back and you laying your head on his chest, one because of the problem above and two because it's easier to kiss you that way. He wouldn't mind being the little spoon but he does like to pull you in his arms and wrap himself around you in a protective way.
Long kisses or short kisses?
John likes long, drawn out kisses, where he can feel your body against his and where his hands can roam around as they please. They always end up cupping your ass, or on your hips, hooking into the waistband of your pants (or roaming up your dress) so he can get some skin.
Who's the first to apologize after a fight?
It's best to leave John alone after fighting with him, even if he said some hurtful things (which is likely to happen, especially if his temper gets the best of him). He always feels guilty afterwards but might avoid you still, as he continues to have issues learning how to use his words when it comes down to it. After a few days, if you're the first to approach him, he'll probably sputter out some sort of apology for his actions, telling you he didn't mean what he said but he'd understand if you didn't plan on forgiving him. When you point out you were the one to approach him first and say sorry, he laughs sheepishly, realizing he should probably have a little more faith in your bond.
Who is the flirt? (And who is the romantic?)
John is a good enough mixture of both, but you don't find him flirting much with other people unless it's to get something out of them. He's not that good at it, either, though you guess if someone found a bumbling cowboy trying his best to be attractive they'd fall for him quick. He also tries his best to be romantic, but some of his ideas may fall short or not work out at all; he's not (entirely) ashamed to ask the other women around camp for some advice when it comes to wooing you or taking you on a date you might actually enjoy.
Who comforts who more often?
You would likely have a lot to comfort John about, especially when the gang is coming to an end and he doesn't quite know where life plans on taking him. He also has plenty of doubts when it comes to you, not knowing if he can really take care of you or give you everything you want in life. He appreciates it when you try to silence his worries, promising that things will work out, even if it won't be an easy road.
Who wants kids more?
This is a tricky situation. He was never the type of person who imagined he would have kids at all, feeling like he could barely satisfy a consistent partner let alone a child. Things changed after Jack, after he really started to realize he needed to step up, and he finds he does actually enjoy having a little one around when he stops worrying over silly things. He wouldn't mind having more with you if that's what you wanted, but he wouldn't likely bring it up otherwise because it was a complicated situation.
Who proposed?
You did, much to his surprise. After you propose you joke it would've taken him another ten years just to marry you, since he always thought out these great ideas and then never went through with them for one reason or another. He considers saying no because he wanted to be the one to propose, but decided it's better to not piss you off, and happily accepts the proposal. It's something you both still joke about years later.