person A: I have been feeling very happy lately! :) 
person B: Awesome! Nothing like stringing together a long streak of feeling happy in the world. Anything in particular got you chipper?
person A: Yes_comma_ my boyfriend and I have finally started to get serious in or relationship. We have even started talking about marriage and children! :) 
person B: Aww_comma_ that's tremendous. Those are big steps_comma_ but if ever there is a good-sign of a relationship_comma_ it's when those topics are approached happily. Congratulations!