Depends on the time I think. In the 90's to the 2000's sure you had a lot of overly sexualized characters and lots of hookups of no substance but I think generally speaking comics used to play up on the soap opera aspect of relationship even more than they do now. It used to be fun figuring out the romances, love triangles, unrequited feelings etc but outside of the Krakoan Era I don't comics take on sex and relationships have been very conservative the last few years.
Just compare Claremont X-Men to Duggan X-Men and it feels like the way the books handles relationships is completely different.