yes, like Philip and Mathilde of Belgium. But for many young citizens of the middle class, it gives them an "posh" image (people who marry among themselves becaufe "Mr. or Miss everyone" is not good enough for them) and people completely out of touch .
Thinking that comes up frequently on Mathilde is "how she can understand our problems, she comes from a noble family." Most people do not appear in it (although she is appreciated), while yet before her marriage she worked.
Finally, just have to wait until the rumor becomes an official announcement ..
Thinking that noble people are out of touch or that people marries among themselves because the others are not good enough for them is a total non-sense. The best is to marry someone who understands you and with whom you will be able to build a very strong couple. No matter the social class.
As for being out of touch, here, there are many noble people who are living a perfectly ordinary life. I know a couple of noble people who have known, for example, unemployment.