Have you been properly introduced?

But God demonstrates His own love toward us, in that while we were still sinners, Christ died for us.

Rom 5:8 NKJV

Introductions are an interesting custom in any society. When talking to a person while waiting in line you will very seldom introduce yourself. The relationship you have is based on standing in a line together, and will not likely outlast the wait. However, when you meet anyone in a capacity that implies a long lasting relationship formal introductions take place. The word translated "demonstrates" in Romans 5:8 has the sense of "introduces". God formally introduces us to His love here: at the Cross. He loves you, and He has proven it.