Here are some ways to say "I love you" in Italian:

1. **Ti amo** - This is the most common way to say "I love you" in Italian. It's used for romantic love.

2. **Ti voglio bene** - This phrase is used for close friends and family. It means "I want you well."

3. **Sono innamorato (innamorata) di te** - This means "I'm in love with you."

4. **Sei il mio tesoro** - This means "You are my treasure."

5. **Amore mio** - This is a playful way to say "my love."

You can add enthusiasm by using **molto** or **tanto** before the phrase.