Cats can be fickle creatures, but there are ways to tell whether or not your cat loves you.
Here are a few ways in which cats are saying, "I love you:"
If your furbaby is purring in your presence, more than likely it means that they feel content with you and cared for, just as they were with their cat mother
Life with Patches
Patches has been in my life for many years, but has since come into my care full-time over 2 years ago. She and I bonded when I started bringing her with me to my room and playing with her. She loved our time together. She started giving me kisses, chewing on my hair, and would not stop purring. We became attached to one another.
Now that she is my full-time furbaby, she follows me around from room-to-room. She sleeps under my desk as I work. She meows at the bathroom door when I'm getting ready for the day. She lays on top of me in bed and watches TV with me. She's a very happy cat.
When our cats say "I love you," the main way we can say "I love you" back is to give them the best care possible.
Also, a slow blink helps as well.
(photo is of my cat Patches)