I was a lot younger than my DH, I became a Mum at 17.
This was right for me, I was mature enough.
I support my Neice, who at 17 had a baby, she lives in a Mum and Baby Unit with Mum aged 14-22.
One girl at 15 was a better Mum (in absence if putting it another way) and more "able" in living an independant adult life, provided by the Welfare system, of course.
The issue with "being" with your 14 year old BF and having sex is that the young person thinks they are having a full on relationship, just like the adults around them, so they plan a baby.
I'm now talking my Neice through her first adult break up, she thinks she's lost the live of her life, because she is seeing what is usual in a relationship as special.
This is because she is old enough (now 18) to go on proper dates, were as the boy she had her baby with played on his X box will she sat with him. They also went the park, to McD's and had sex.
She compares their sex life, so thinks her new BF was amazing, of course having sex at 18, with a 22 year old, is going to be, as opposed to, at 15, with another 15 year old.
I am trying to persuade her that there's lots of life to experience and have fun with, dating and sex is part of that.
The reality is that they are all experiencing part of an adults life, to soon and it is a shame.
Most teens need to slow down their personal lives.
My middle DD started going to pubs etc at 14, she now says it took the shine off going out at 18.
The teens that I see (and I come into contact with lots) aren't having the Fun that they should be, it's all to intense.