Your question has been debated for hundreds, maybe thousands of years, with differing opinions. The passage you quoted talks about there being no new marriages in heaven; maybe God is leaving that for the new earth, after the thousand years in heaven. He does not say that existing marriages will be annulled. Besides, God created marriage and sex before sin came into the world, so why would He suddenly wipe it out. We don’t know what God has in mind, so let’s wait until we get there. Whatever He has in mind, you can bet that it will be good.

I understand that you are worried that you and your wife (and children, if there are any) will not be together in heaven. If you know God, you will know that He does the very best for us, if we give ourselves to Him completely. So why would He not keep you all together in heaven, when you were together on earth. God hates divorce here on earth, so does that not also stay the same for heaven? No, I think that you can relax, God will keep you all together in heaven, so concentrate on your relationship with God, so that you all will be there.  

Malachi 2:16   “For the Lord God of Israel says that He hates divorce, for it covers one’s garment with violence,” Says the Lord of hosts. “Therefore take heed to your spirit, that you do not deal treacherously.”

Malachi 3:6   “For I am the Lord, I do not change.”

Proverbs 3     ⁵ Trust in the Lord with all your heart, and lean not on your own under-standing; ⁶ In all your ways acknowledge Him, and He shall direct your paths.
⁷ Do not be wise in your own eyes; fear the Lord and depart from evil.

I hope that this makes sense to you. God bless!