No, I don't have to get married at a certain age, but I want to get married in the temple (and you have to be the same religion to get a temple recommend) someday. If I date people from another religion, then it is till death do us part. When I date people from the same religion, and if I get married, it is forever. While I am not dating to marry right now (even though some of my friends are...ahh), I want to strive to date people the same religion as me, so it doesn't lead to more heartbreak than necessary.
However, I have lots of friends on the internet, so never hesitate to pm me (as long as you aren't talking about sex or drugs), that is not harmful.
So, sorry to come of as stringent, but that is what I believe.