What is your opinion about marrying? its for just girls only!?

i am a teenager boy who isnt actually much familiar with US culture, so as a girl at what age do u think or want to marry like get into the one for ever relationship. I am asking this bcuz in my hs there is a girl and i dont know what but i want live with her. And when i asked my friend he said that you dont wanna marry before 28 or smth and u shld pinn down couple of hot girls. thiss totally pissed me off, but this could be the culture so what i want to know is that do girls also want to marry at 25 or 28. When would u want to marry, do u think before marrige is right. plz plz also,mention ur age, and has ur opinion changed frm what it used to be abt these things?