Yes, by the time we are young adults, how many films and TV series have we seen based on romances? The vast vast majority. The vast majority of music is also about romance.
We are literally bombarded with it and brain washed from when we're small kids.
Until recently the core plot of every Disney film - aimed at kids - was a romance.
When I was a young child I'd hear "is this your wee boyfriend? Aw give him a kiss" "how many valentine's cards did you get".... I got worried I was a failure/reject/abnormal because I didn't have a bf and wasn't receiving valentine's card as a young child. I still hear some women speaking to kids like this now.
We are brain washed to think that the purpose of life is coupling up.
Most films and books aimed at women end in weddings and babies.
Twilight - recent books and films - is a romance, wedding, marriage, baby story. In the 00s, nothing has really changed.
This seems to be particularly aimed at females .... Males always had the alternative interests and focused of sports etc. It was not the same for girls, and is still probably not equal.
Look at the commentator on the England ladies football team ... "They return to being wives and mothers" ...would a commentator ever say the equivalent about a male football team going home after a tournament??
Things still haven't really changed all that much.
When we condition both sexes, but esp females to believe that coupledom, kids etc is the be all and end all, not optional (unless you want to be "abnormal") .... Why are we surprised that women will put up with pretty much anything to stay in a couple and family.