Why does my Babydaddy do this?

So I just had my son he is 3 months old and I’ve noticed something about his dad when he’s around our son, when I’m holding our son, everytime his dad gives me this creepy look before he goes to kiss or touch our son and he’s mentions that (Oh awe you love him?) And I said of course I do And he asked me am I going to tell our son I love him one day and I looked confused and said I tell him I love him already i been did even before I gave birth to him. And when I say that I will protect our son from anyone including family members he asked me does that mean himself to and I said yes. Please help me figure this out and are my instincts trying to tell me something?

Why does my Babydaddy do this?
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