Romantic evolution

1: An expression used to describe how a specific romantic couple has progressed in their relationship over time
2: A phrase used to refer to how the processes from which people get into romantic relationships and or marriages in a specific culture have changed over time

Quintin: How are you and Denise doing these days?
Winston: We’re doing great. She has gotten comfortable enough with me to start talking to me about her past, some of the problems that have been affecting her family, her religious beliefs, and so on.

Quintin: In terms of your romantic evolution, it sounds like the two of you have gotten really far in your relationship in the past eight months.
Winston: Me and her have definitely made a lot of progress during that time in regards to our romantic relationship.