is it real?

Was scrolling through Facebook the other day and I found this post

It make me thinking of it is actually real for people to chase some one for years?
After talking and knowing more about some people the person told us that her Boyfriend have chase her for 3 years and they already dated each other for another 3 years. Thinking about it is like omg that’s freaking crazy. How can someone be so loyal? to the person they like/love.