Hi there. So I am kinda in your husbands situation. My girlfriend and I have been dating for nearly 5 years and she is getting anxious over when we will get married and start a family.
All of her friends are either married with kids, or dating with kids. Family members are having kids - so its always on her mine, and honestly it drives me crazy.
Currently, I am a full time student and unemployed and she just graduated and is employed. She is ready to move on in her life but I am not. I, for myself, need to finish school. I have told her this and explained it several times... I need to do this for me (i screwed that up once a few years ago) before I can move on with anything (her or anyone else).
I have told her countless times that I wont even consider marriage before I am done with school, I have three semesters left. She doesnt understand, rightfully so I guess. I have even gone to the extent of telling her if she doesn't quit with the relentless pressure despite my love for her I would leave her. I want to be able to provide for my wife/family and right now I am unable to do that.
We have sex fairly regularly and she is on birth control (the shot) but she is always begging me to finish inside her and it have become even more of a paranoia that she is trying to entrap me - which is why I usually pull out or wear a condom.
Anyways. Sometimes the pressure of all the surrounds can have a negative impact on a guy. You are still young, and maybe he just wants to have a stable foundation to start a family on. That is my goal and intentions. I feel my girlfriend would make a great wife - but I would have no problem leaving her if she keeps pressuring my into a marriage I am not ready for. Its easier to break up than get a divorce.
Best of luck to you.