Boyfriend gets all lovey dovey in bed. Is this common?

As soon as we get into bed, we'll cuddle up and he'll say things like "You're perfect" and "You're so beautiful". He's never like this during the day but when he is, I love it and he makes me feel really happy. Anyone else's partner do this and is there a reason for it (or does he just want sex?)
Boyfriend gets all lovey dovey in bed. Is this common?
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