If your marriage is supposed to last a lifetime, then maybe your flowers should too. That strange logic led me to Dulken & Derrick, the venerable silk-flower maker in the Flatiron. After calling ahead, I was led into the sixth-floor workshop—a comically messy labyrinth—by the shop’s third-generation owner, Pamela. She showed me a small nest of faux-roses, leaves, and sprigs (too bridesmaid-y); a misshapen bunch of long-stems dyed a nauseating Pepto pink; and finally, a fistful of amazingly lifelike white silk blooms. Tied with green organza tubing and wrapped in tissue, the bouquet was romantic and picturesque but also absurdly expensive ($250). On the plus side, I could give these same flowers to Alexis every year. On the minus, she’d divorce me if I did. 12 W. 21st St., nr. Fifth Ave.; 212-929-3614.