Texting is the closest technology has gotten humanity to ESP. It's easy for buddies to drift apart when they no longer have a bunch of shared experiences, so if you and your homey can't be around each other as often as you used to be, replace some of that physical proximity with a grammatically challenged, text-based, remote friendship. It doesn't matter what you talk about, as long as you and your buddy are keeping each other up to speed on the rest of your life, then you there's less chance the two of you will drift apart. Keep him updated even if you've only been doing boring boyfriend stuff like picking out color schemes for your bedroom or putting out occasional house fires. Now that you're spoken for, you've got new responsibilities. That's why you need to text each other so often that you start to think your best friend lives in your pocket, giving you a vibrational sack-tap every five minutes.
"You're packing some heat, bro!"