What does it mean when a guy says "love you" instead of "i love you"?

This guy i've been with for six months said "love you" to me, he usually says I like you or "i like you a lot". He also opens doors and buys food for me, and feeds me with a spoon. We cuddle and have sex a lot

What does it mean when a guy says "love you" instead of "i love you"?
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