You know that Jesus loves you because He sent His Son to die for your sins (wrongdoings) on the Cross. The Bible teaches that Jesus loves everyone-even you. He loves you personally.

Unless you have given your heart to Jesus and asked Him to be your savior, it is very difficult to see that He loves you. If you have given your heart to Him and asked Him to be your savior, you can also ask Him to personally manifest His love to you. He delights in doing this.

Read more on this topic here. 

"For God so loved the world, that He gave His only begotten Son, that whoever believes in Him should not perish, but have eternal life" (John 3:16).