What does it have to come to for me to end things?
Would I be right to end things, or is there a resolution?
Have I just got thee 7yr itch?
Is he really just a friend, not a husband?
Can he change enough for me to love him again?
In no particular order:
You husband IS your friend, he couldn't be your husband if he wasn't. What makes a husband special & different beyond a friend is the sex, the cohabitation, the sharing of material possessions, the complete involvement in each other's lives, the total commitment, and above all, the absolute love. If those are absent for you then perhaps he's become a friend only.
The 7-year itch really does exist in men, though scientists think it actually hits beginning around 5 years. It may just take 7 years before he finally acts on it.
One theory for it that I've read is that 5 years is about when a child is becoming sufficiently independent that the mother is less reliant on the father for close support. The father, in turn, is ready to move on to carry out his biological "prime directive" of procreation, with another childless female. And while he could have been doing that all along, he wouldn't be able to care for all his offspring as well, causing them not to survive, and so evolution programmed him to pair bond with his female mate, at least for 5 years.
Gays of course aren't mating with females, but the assumption is that inner male clock is still set to go off at 5 years, when a man gets restless and wants to move on, try something new. But nothing says you MUST move on, and if you recognize this built-in urge, you can override it if you wish.
The question is can you BOTH change to love EACH OTHER again? It's rarely all on one side, though you may perceive it that way. More likely it's mutually reinforcing changes that have been occurring gradually over time. Therefore some open discussion can help, perhaps outside counseling. Nothing to be ashamed or feel guilty about, perfectly normal for couples. Call it a mid-course correction.
If all else fails then end it as amicably as you can. Maybe he's been looking to do the same thing. You won't know unless you talk. It would not be nice to spring it on him as you're packing your bags. You've got an investment in each other, and I assume you wouldn't like it either, if you came home one day to simply find all his stuff cleared out.