My boyfriend and I have been dating since we were both 17. We're now 21 and 22 and have been together for over four years. We are happy in our relationship, but his family apparently wants more. 

I come from a very conservative family. In my family, we never even mention or introduce a boyfriend or girlfriend until we're ready to pop the question. If you're living together, you keep it quiet. That is always how I have been raised. That is what is normal to me. 
Meanwhile, my boyfriends family is very liberal. They always talk about sex (my family acts like it doesn't exist), and they always bring up the topic of marriage. At every family party, the first question we are asked is always, "So when is the wedding?" followed by, "When are you going to have kids?" 

I appreciate how much they support our relationship, but it is starting to scare me. Everyone in his side of the family gets married in their early 20s. I do want to marry my boyfriend and he feels the same way, but just because you're in love, does that mean you always have to get married? Is there ever a right age?

Tell me, Lovelies: What age do you think is the right age to get married? Do your families ever bother you about the topic of marriage?