<human>: Give me the gist of the text in a nutshell

Hi there r/relationships!  I was looking for a little outside opinions and advice.

My SO and I have been together for 2 happy years.  We're extremely sexually compatible, get along perfectly minus the occasional tiff and are each others best friend. We currently reside at my father's house as we are both completing university at this time (me in my 2nd year, he in his 4th) and its easier for us this way for the short term future. 

Recently, we've been discussing marriage a lot,  a topic sparked by attending a family friend's wedding a few months ago.  Ever since then we would talk about what our wedding would be like, who would be bridesmaids and groomsmen, etc. My SO has suggested proposing in the near future,  a revelation that sent me over the moon because I've decided that I want to spend my life with this amazing man.  
However,  I worry that we are too young, more me than him. 

this is why I have come here.  r/relationships,  I need your opinions on the right age to get married,  if there even is one.  I worry a lot about upsetting those around us and would like to avoid that if possible.
<bot>: Me (19f) with my SO(21m)of 2 years want to get engaged but fear the repercussions with family and friends because of our ages and I am seeking opinions.