There is no doubt that the digital age has led to some changes in dating. A lot of the changes are superficial. People can now search for each other online. This is an added bonus to dating. It still doesn't change the basic need to find a partner. Couples can interact with each other long distance. While snail mail was undoubtedly slower, long distance relationships have existed for centuries. The digital age simply makes it faster and easy to communicate from far away.
The basics of dating still exist and are largely unchanged. People must still hunt to find a partner. They must communicate with each other for a relationship to occur. Relationships still falter and are rescued. Some people prefer the chase, but are uninterested in relationships. There are other daters who seek a permanent partner. They will date until they find a partnership to last their entire life.