I am 27, and been with my OH for 9 years. We live together, are looking for a house to buy, and are engaged.
I received a comment today from a woman I work with. She asked me about my engagement ring, and then how old I was, how long we'd been together etc. When I said we'd been together since we were 18 she said, "that's young. But even now, you're still too young to get married."
I am a bit offended. She may be in her late 30s, but she has known her husband for only 4 years (so less time than I have known my OH), and had a baby after knowing him less than a year. Yet I am 'too young' despite knowing my partner for nearly a decade 
AIBU to think age doesn't matter? It's not like we are not teenagers.